Easy to Build Desk Top 3 Axis CNC Milling Machine ALLSTEPS
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7/27/2019 Easy to Build Desk Top 3 Axis CNC Milling Machine ALLSTEPS
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Here is a way to make a computer controlled milling machine. That puts the real
power of a computer control machining into the hands of the average human.
Small enough to set on the desk but scalable to any size. As inexpensive as
possible without sacraficing accuracy (too much). All most all the parts can be
purchased in local retail stores. And above all CHEAP you can be up and running
for well under $200. With it you can do 2 Dimentional engraving and PC board
etching and 3D milling and modeling in Foam, Wood, Plastic and other soft
materials.
Also try watching the YouTube movie at the end (the last frame).
New information on the Motor Driver Circuit is (HERE).
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About This Instructable
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Tom McGuire
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Step 1: The Frame
The frame needs to be a flat base that you can mount everything on horizontally
and a goose neck of some kind to hold the Z axis (the up and down part with the
motor tool)firmly in place. I used one inch pipe just for fun but as it turned out it
was pretty handy too. When I needed to make adjustments I could just tap it with
a hammer. As you can see the post that holds the Z axis doesn't have to be in
the center. It just needs to be firm and the water pipe does a good job of that.
Later, after you are sure all the pipe joints are in the right place, you can add a
drop of thread sealer to the joints and it will be a good solid structure.
Step 2: The X Stage Rails and Motor
Inexpensive MiniTurbine
Cast AluminiumGears
Sand Digger: Madefrom Recycled
Fitting the Motor
Tail Solar Light?
Hole Fishing
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Next its time to add the rails for the X axis stage. These rails are 3/4 inch U
chanel aluminum that you can get from the hardware store. Put a washer under
each end to space the rail off the pipe just a bit. Don't worry about the rails being
perfectly parallel. You'll see why later. Now mount the stepper motor with a
bracket like you see here. Connect a length of 1/4 by 20 threaded rod to the
motor shaft with a short piece of rubber hose (1/4 inch fuel line). Now your ready
to set the movable part of the X axis(the stage).
Step 3: X it Stage right
http://cdn.instructables.com/FL7/MM3Q/F54HOH2P/FL7MM3QF54HOH2P.LARGE.jpghttp://cdn.instructables.com/FD6/ORH3/F54HOH2Q/FD6ORH3F54HOH2Q.LARGE.jpg -
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Take a piece of plastic(I used Plexiglas) or metal, something strong and flat and
mount a piece of the U channel to it. Now the tricky part. The round thing is a
http://cdn.instructables.com/FMK/BYES/F54HOH2O/FMKBYESF54HOH2O.LARGE.jpghttp://cdn.instructables.com/FG1/STW9/F54HOH2N/FG1STW9F54HOH2N.LARGE.jpghttp://cdn.instructables.com/FJS/8YJL/F54HOH2S/FJS8YJLF54HOH2S.LARGE.jpghttp://cdn.instructables.com/FWO/PX45/F54HOH2M/FWOPX45F54HOH2M.LARGE.jpg -
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bearing. You can get them out of motors or buy them at a hardware store. Mount
it to a short piece of aluminum like so. Then take a 1/4 in. coupling nut(a long
nut) and wrap it with aluminum like so(see pic.) The bearing will hold the X stage
to the X rail and the coupling nut will allow the motor to run the satge back and
forth. It wouldn't hurt to grease the skids a little and the nut too.
Here's a video on making the bearing fixture.
Step 4: The Y stage
The Y stage is just like the X stage but turned 90 degrees. Mount two rails and a
http://cdn.instructables.com/FTD/MJ33/F54HOH2L/FTDMJ33F54HOH2L.LARGE.jpghttp://cdn.instructables.com/FW1/J4F6/F54HOH2I/FW1J4F6F54HOH2I.LARGE.jpghttp://cdn.instructables.com/FZ8/1GK4/F54HOH2K/FZ81GK4F54HOH2K.LARGE.jpg -
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motor on the X Stage and then take another piece of flat material and a U
channel and make the moving Y stage. Make the little bearing thing and a
coupling nut for it too. When your done it should look like this.
Step 5: Zee Z Axis
Again we are going to reproduce the X and Y Stage to create the Z axis stage.
Take a flat piece, here I used a piece of white Plexiglas. Mount some rails and a
Motor to it. Then make a moving stage piece with a u channel and a roller
bearing. We'll do something a little different with the nut(see picture). The four
posts you see on the stage will hold the motor tool. Now since this stage is going
to move up and down the weight of the motor tool will make it want to come off of
the rails so lets add a few more roller bearings to each side to keep it together.
http://cdn.instructables.com/FFJ/YKRJ/F5FEQ1PG/FFJYKRJF5FEQ1PG.LARGE.jpghttp://cdn.instructables.com/FIR/N3UL/F5FEQ1PD/FIRN3ULF5FEQ1PD.LARGE.jpghttp://cdn.instructables.com/FHL/VZIB/F5FEQ1PI/FHLVZIBF5FEQ1PI.LARGE.jpghttp://cdn.instructables.com/FS5/P6D6/F5FEQ1PC/FS5P6D6F5FEQ1PC.LARGE.jpghttp://cdn.instructables.com/FBB/TJR8/F5FEQ1PF/FBBTJR8F5FEQ1PF.LARGE.jpg -
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Step 6: Get it together
Now we slap the motor tool into the Z stage. Then its time to mount the stage to
the frame. And there you have it. This is the mechanical structure. From here wewill need to hook up the stepper motors to a controller and get some software
running on the computer but I'm going to save that for future articals.
Step 7: What's it Do
http://cdn.instructables.com/FGL/K0TX/F5FEQ1Q9/FGLK0TXF5FEQ1Q9.LARGE.jpghttp://cdn.instructables.com/F8B/VXTH/F5FEQ1PE/F8BVXTHF5FEQ1PE.LARGE.jpghttp://cdn.instructables.com/FOG/COID/F5FEQ1Q4/FOGCOIDF5FEQ1Q4.LARGE.jpg -
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If you were interested in this project it's likely you have already seen what can
be done with an 3 axis(XYZ) computer controlled milling machine. What issuprising is what kind of accuracy you can get out of this thing after you tinker
with it a little bit. Make sure all the rails are held firm and straight. Tighten the
roller bearings so the stage doesn't shift .
I used it to make PC boards. It's real good for engraving name tags and signs.
And it's pretty exciting to see it carve a 3D object out of a block of foam or
plastic.
WARNING there's a lot to learn about the software. Some venders offer package
deals of motors, drivers, and software. That makes it easier but you pay for it.
I'll add more to this later. Send me comments and questions.
Step 8: Easy Mill the movie
If the literal instructions are confusing try watching the YouTube movie:
http://www.youtube.com/watch?v=6drMZqmyXQc
http://www.youtube.com/watch?v=6drMZqmyXQchttp://cdn.instructables.com/F9O/8WYR/F5GDQP47/F9O8WYRF5GDQP47.LARGE.jpghttp://cdn.instructables.com/FVN/JXXK/F5GDQP45/FVNJXXKF5GDQP45.LARGE.jpg -
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Also check out the follow up instructions on Stepper Motor Control: Easy Mill
Stepper Motor Controller
Step 9: Engraving
Now that I got the machine back together after making the instructable and I did
some engraving and made a PC board.
Cutting plastic is no problem but doing the PC board the bit went a little too deep
on the left side of the board and took out all the finer traces. This is when you
start tweeking on it. Just take some aluminum foil and put it under the rail of the
Y axis. So as the stage travels left to right the height of the bit should stay the
same.
Notice I'm just holding the material down with masking tape. What I like about
this thing is, it's easy to fix these kinds of problems because it's all made from
simple elements.Here's the new video:
http://www.youtube.com/watch?v=LcdozYDpzjU
Also check out the follow up instructions on Stepper Motor Control: Easy Mill
Stepper Motor Controller
http://www.instructables.com/id/EJ3KFVBF5R8QRL3/http://www.youtube.com/watch?v=LcdozYDpzjUhttp://www.instructables.com/id/EJ3KFVBF5R8QRL3/ -
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carabac
This is my version of Tom's CNC. It uses the stepper motor 3 Axis CNC
Driver Ki t from chromationsystems.com (Jeff from Chromation Systems was
a ton of help and his instructable is here:
http://www.instructables.com/id/Parallel-Port-3-Axis-CNC-Driver-Opto-
Isolated/) and I am using KCAM for the software. I named my machine
CNCme. You can also watch the Youtube at:
http://www.youtube.com/watch?v=Uzli11WJeo4. Thanks Tom, Jeff and
Instructables.
sharbin carabac
Nice Carabac! Where did you get the slides that you used?
carabac sharbin
The slides are off a network hardware cabinet. I purchased them
from a local surplus store. They are very nice because they run on
ball bearings.
daney198
Hello
I make this CNC Milling Machine
Thanks Tom & Instructables
LaughingCheese daney198
Wow! Great work!
Does that panel behind the machine related to it or is i t something
else?
daney198 LaughingCheese
Thanks
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4 years ago Reply
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yes panel is related to machine. all the kit and wiring inside of panel.
SeaCaptain daney198
That looks like an excellent version of this instructable! Is there a
possibil ity of you doing an instructable of your panel? Looks great!
narpas
Here is my mill I guess its not cnc and does not follow many of your
design concepts but you inspired it!
granolape narpas
that's rad. it's like an etch-a-sketch mill !
sefi
hi tom, i too was inspired by your simple design, and actually guided a high
school project based on your designe, the hope was that it will enable
students to make low cost pcb in school . after the project(wich was a bit
diffrent from yours and didnt works all that well duo to my lack of technical
skills and experience(im 18) and other things) ended i decided to make a V2
wich is almost the same as yours, and it dose work well,i manged to see it
do very presice things with a pencil . the problem is i cant find a right drill for
making the pcb's,(im pretty sure thats it) i got this 8 pcs kit from drill bit citybut the drill that dose the routing dose not have a pointed tip in the very end
and there for dosn't penetrate the circuit until much pressure is applied but
then it goes in way to deep, im guessing its the drill bi t but id like to hear
what you say, and maybe recommend me a drill or a set from drill bit city or
anywhere else(take in account i live in Israel ) my main goal is PCB's
although i already did some name engraving and it came out very well! 1
more thing... is there a way to use lazycam with kcam? and what do u think
about mach3 it look way more complicated is it any better?
http://cdn.instructables.com/FQN/ZU3E/FH4VEHWQ/FQNZU3EFH4VEHWQ.LARGE.jpghttp://cdn.instructables.com/F13/PZNC/FH4VEHWR/F13PZNCFH4VEHWR.LARGE.jpghttp://cdn.instructables.com/F4Y/PROC/FH4VEHWS/F4YPROCFH4VEHWS.LARGE.jpghttp://cdn.instructables.com/FI3/RPEQ/FH4VEHWT/FI3RPEQFH4VEHWT.LARGE.jpghttp://cdn.instructables.com/FRO/5Z8Y/FH4VEHWU/FRO5Z8YFH4VEHWU.LARGE.jpghttp://cdn.instructables.com/F41/NP13/FH4VEHWV/F41NP13FH4VEHWV.LARGE.jpghttp://cdn.instructables.com/FOP/PSY2/FH4VEHWW/FOPPSY2FH4VEHWW.LARGE.jpghttp://cdn.instructables.com/FDR/T1P3/FH4VEHWX/FDRT1P3FH4VEHWX.LARGE.jpghttp://cdn.instructables.com/FJO/CW2M/FH4VEHX0/FJOCW2MFH4VEHX0.LARGE.jpghttp://localhost/var/www/apps/conversion/tmp/scratch_3/C5G7HLAFH4VEHX6http://localhost/var/www/apps/conversion/tmp/scratch_3/member/sefi/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/sefi/http://localhost/var/www/apps/conversion/tmp/scratch_3/CSX4RZ5FT7PM4N9http://localhost/var/www/apps/conversion/tmp/scratch_3/member/granolape/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/granolape/http://cdn.instructables.com/F18/FDMX/FSSIHYYV/F18FDMXFSSIHYYV.LARGE.jpghttp://cdn.instructables.com/F88/0LBI/FSSIHYYU/F880LBIFSSIHYYU.LARGE.jpghttp://localhost/var/www/apps/conversion/tmp/scratch_3/CLUQEDWFSUUXRBYhttp://localhost/var/www/apps/conversion/tmp/scratch_3/member/narpas/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/narpas/http://localhost/var/www/apps/conversion/tmp/scratch_3/C618ZC5G51G5RORhttp://localhost/var/www/apps/conversion/tmp/scratch_3/member/SeaCaptain/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/SeaCaptain/ -
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snowpenguin sefi
Wow! I like the design of the machine in the last three
pictures... Do you have any kind of build log for it? More
pictures? What did you make the frame out of? Thanks, snow
sefi snowpenguin
hi, yes sure there are plenty more pictures at my website (sefi.tk) the
frame is made from U channels alone, it was a much much morestable design yet it requires precision with assembly cutting and the
whole process, out of my experience, after building 3 models, its
clear to me that the cost of a stable machine is it requires more
precision in ever step of the way, if you have experience, tools, and
two right hands then go for something stable, otherwise stick with the
basic plans. btw i solved the whole pcb making thing by getting an
endmill and made already a bunch of pcb's and many other thing,
thanks alot tom. hopfully my next project wi ll be my own instruct-able
:P
codex sefi
Regular Dremel engraving cutter (#105) works fine for me. It's 0.8mm
wide and I use it for PCB Isolation Routing. You can find i t in any
hardware store (Ace\Home-Center\Rosenfeld) here in Israel.
sefi codex
i tryed ace/homecenter with no luck, in tel aviv & hertzliya where
exacly did you get it? by the way lior, i sew you website - VERY
NICE :) i want to talk with you if i could il email you from your forum.
Tom McGuire(author) sefi
Congratulations. That's a good piece of work for a class
project. I can give you some tips on PCB work. The motor tool
can have a problem with wobbling, that is the bit may be off
center. It may have an aluminum collet that is just not very
good. I was suprised to find the 3 jaw chuck replacement
worked better. May be because it has more mass. Also I found
bits at this site:
http://www.precisebits.com/products/carbidebits/scoreengrave.a
Good job.
I hope this works for you.
Tom
crreed
Hey Tom, great project! I had a lot of fun building this and as soon as I
can scavange a DB25 cable, i wil l be able to use it. Here are some of
my pictures. The table is 9"x11". I added a simple fish tank pump to
blow off the dust. The plexiglass extenders allow the router to utilize
the full 9" x11". I will be posting pictures of my slightly modified circuit
board.
snowpenguin crreed
Considering you've finished yours, do you think that a machine
with 10" x travel would have to have 20" x rails, or is my logic
http://localhost/var/www/apps/conversion/tmp/scratch_3/CSKJ7OPFSPRNE2Qhttp://localhost/var/www/apps/conversion/tmp/scratch_3/member/snowpenguin/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/snowpenguin/http://cdn.instructables.com/F57/Z957/FJD369O0/F57Z957FJD369O0.LARGE.jpghttp://cdn.instructables.com/F2J/XL1Z/FJD369O1/F2JXL1ZFJD369O1.LARGE.jpghttp://cdn.instructables.com/FI3/16SY/FJD369O2/FI316SYFJD369O2.LARGE.jpghttp://localhost/var/www/apps/conversion/tmp/scratch_3/CUL00W3FJD369O3http://localhost/var/www/apps/conversion/tmp/scratch_3/member/crreed/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/crreed/http://www.precisebits.com/products/carbidebits/scoreengrave.asphttp://localhost/var/www/apps/conversion/tmp/scratch_3/CQ01EBWFH5E6S0Ohttp://localhost/var/www/apps/conversion/tmp/scratch_3/member/Tom+McGuire/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/Tom+McGuire/http://localhost/var/www/apps/conversion/tmp/scratch_3/CXIBR0XFH7AUN2Ghttp://localhost/var/www/apps/conversion/tmp/scratch_3/member/sefi/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/sefi/http://localhost/var/www/apps/conversion/tmp/scratch_3/C0DWLAHFH6EBVY0http://localhost/var/www/apps/conversion/tmp/scratch_3/member/codex/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/codex/http://localhost/var/www/apps/conversion/tmp/scratch_3/CXP4NZIFT7PJX4Whttp://localhost/var/www/apps/conversion/tmp/scratch_3/member/sefi/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/sefi/http://localhost/var/www/apps/conversion/tmp/scratch_3/CQI3PFGFT7PTZB9http://localhost/var/www/apps/conversion/tmp/scratch_3/member/snowpenguin/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/snowpenguin/ -
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screwed up? Thanks, snow
Tightwad crreed
Wouldn't the extenders flex and cause the table to move? Either
up/down flex due to the weight of the Stepper, or torsional flex as the
motor moves the table?
crreed Tightwad
the weight of the table itself, the anchoring provided by the x
axis motor provide stability and prevent wobbling of it.
altomic crreed
fish tank pump- sweet.
Roidy
Hi Tom your design is fantastic and so easy to make this is now the second
one I`ve made, I work in a uPVC window factory and so I made mine out of
welded uPVC window frame. I got my stepper motors out of an old fruitmachine of all places! Still needs a bit of tweaking but I`ve routed a few
PCB`s and everything works great. Rob
fjr122
Last night I completed my construction :D Tom, Thanks so much for
helping me get here! Here's some pics (yeah I've still gotta hook
everything together)
userhck
This is my first full-on, serious project I have done from this site. Well, maybe
I shouldn't say that, as i am not quite done. Went shopping for most of the
supllies this morning, which took me from Home Depot to Ace Hardware to
Big Joe's. The only things I need now are the plexi planes and the motors,
which are coming. An interesting day to say the least. Also, I don't suggest
getting the pipe at Home Depot, as they semm to be downgrading their one-
inch pipe supply. Weird. Here are the pics so far, how does it look? You can
see the threaded rods in the back.
http://cdn.instructables.com/FQE/DV5O/F5Y3KY6Z/FQEDV5OF5Y3KY6Z.LARGE.jpghttp://cdn.instructables.com/FVV/5ISI/F5Y3KY6Y/FVV5ISIF5Y3KY6Y.LARGE.jpghttp://cdn.instructables.com/FF7/ZO7H/F5Y3KY6W/FF7ZO7HF5Y3KY6W.LARGE.jpghttp://localhost/var/www/apps/conversion/tmp/scratch_3/CBFPKB8F5Y3KY71http://localhost/var/www/apps/conversion/tmp/scratch_3/member/userhck/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/userhck/http://cdn.instructables.com/F9M/U3DI/FA190OBW/F9MU3DIFA190OBW.LARGE.jpghttp://cdn.instructables.com/FS1/7DT3/FA190OBX/FS17DT3FA190OBX.LARGE.jpghttp://cdn.instructables.com/FWQ/OY45/FA190OBY/FWQOY45FA190OBY.LARGE.jpghttp://localhost/var/www/apps/conversion/tmp/scratch_3/CUCZ6PNFA190OC1http://localhost/var/www/apps/conversion/tmp/scratch_3/member/fjr122/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/fjr122/http://cdn.instructables.com/FMK/DQPN/FH7AHUQT/FMKDQPNFH7AHUQT.LARGE.jpghttp://cdn.instructables.com/FTO/GZZS/FH7AHUQU/FTOGZZSFH7AHUQU.LARGE.jpghttp://cdn.instructables.com/F7I/P6BO/FH7AHUQX/F7IP6BOFH7AHUQX.LARGE.jpghttp://localhost/var/www/apps/conversion/tmp/scratch_3/CGJFIWJFH7AHUR0http://localhost/var/www/apps/conversion/tmp/scratch_3/member/Roidy/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/Roidy/http://localhost/var/www/apps/conversion/tmp/scratch_3/CHOY4T1FL5R9YJ9http://localhost/var/www/apps/conversion/tmp/scratch_3/member/altomic/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/altomic/http://localhost/var/www/apps/conversion/tmp/scratch_3/CW9XMP8FLQALNKVhttp://localhost/var/www/apps/conversion/tmp/scratch_3/member/crreed/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/crreed/http://localhost/var/www/apps/conversion/tmp/scratch_3/CG5RHYUFLQALMZ8http://localhost/var/www/apps/conversion/tmp/scratch_3/member/Tightwad/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/Tightwad/ -
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fredan userhck
I have also started one of these projects and have completed
two stages. I also made some changes to the design perhaps
you may find them helpful. The upper image is the current state
of the project. If you look on the upper rail , I have added limit
switches to prevent over travel. I found the switches in various
microwaves which I salvaged for parts. The second image
shows the roller tensioner. I uses two roller blade bearings and
some picture hangers with springs, purchased at the local
hardware store. Added a couple bends to the hangers, so thescrew head would not rub on any surfaces, then located a pivot
point which would allow the rollers to contact the guide and
allow the sprint to tension. see third image. The last image
shows how I added connected the threaded rod to the bracket.
I found these screws used to go into the bottom of wood legs,
drilled holes to match the prongs and bent them over to fasten
the item to the bracket. The coupling was created using a few
collars and a nylon bearing. I also used 8-32 threaded rod
which I need to add shrink tubbing to in order to mount it in the
coupling. Hope this helps
userhck fredan
Nice use with the u-channels on mounting the motors. I really l ike
that idea, and i might steal i t from you, haha. But it is looking great,
you are quite a bit farther than I am. Still waiting on those motors. Lol.
userhck userhck
Also, the spring tension on the bearings is an interesting concept.
Perhaps i'll try that out as well. The amazing thing about this project
is it's versatility to make changes.
fredan userhck
Well the inspiration comes from your genus. I truly like this
project, I agree with your former comments. I have used a very
stiff spring, as for the rails,and I have made plans to expand the
length, but for now I just wanted to prove out the design. Glad
you told me about lubing the rails.
userhck fredan
Quick question, I am looking for some cheap steppers, and ebay
definitley isnt the place. Any ideas people? And please dont jsut say
"copy machine", i mean where would you find a copy machine to
destroy?
la3bna userhck
http://localhost/var/www/apps/conversion/tmp/scratch_3/member/la3bna/http://localhost/var/www/apps/conversion/tmp/scratch_3/C1D3T1VF5Y3L10Phttp://localhost/var/www/apps/conversion/tmp/scratch_3/member/userhck/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/userhck/http://localhost/var/www/apps/conversion/tmp/scratch_3/C71I7Z6F5Y3YTQ0http://localhost/var/www/apps/conversion/tmp/scratch_3/member/fredan/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/fredan/http://localhost/var/www/apps/conversion/tmp/scratch_3/CPD6581F5Y3KZOKhttp://localhost/var/www/apps/conversion/tmp/scratch_3/member/userhck/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/userhck/http://localhost/var/www/apps/conversion/tmp/scratch_3/CFPI7SJF5Y3KZOIhttp://localhost/var/www/apps/conversion/tmp/scratch_3/member/userhck/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/userhck/http://cdn.instructables.com/FWO/3L3I/F5Y3YTJW/FWO3L3IF5Y3YTJW.LARGE.jpghttp://cdn.instructables.com/FCM/Y9A0/F5Y3YTJU/FCMY9A0F5Y3YTJU.LARGE.jpghttp://cdn.instructables.com/FDG/KDEE/F5Y3YTK1/FDGKDEEF5Y3YTK1.LARGE.jpghttp://cdn.instructables.com/FDR/NABC/F5Y3YTJV/FDRNABCF5Y3YTJV.LARGE.jpghttp://localhost/var/www/apps/conversion/tmp/scratch_3/CUMUBVBF5Y3YTK7http://localhost/var/www/apps/conversion/tmp/scratch_3/member/fredan/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/fredan/ -
7/27/2019 Easy to Build Desk Top 3 Axis CNC Milling Machine ALLSTEPS
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You can find copiers at a electrically resycling senter. I just hacked
on apart to get the two steppers out. Althou i dont know if both are
steppers (hmm i can really feel the steps so i guessing it is.)
Tom McGuire(author) userhck
Try MPJA.com here's The_Motor_Page
Pretty good motors for around 10 bucks
wpflum Tom McGuire
I was looking at this web site and I need some help on figuring out
what motors to buy. There are a couple of different degree per step
and a bunch of voltages and currents/resistance of coils. Which ones
do I get??? I've never dealt with steppers before. Help!!
wpflum wpflum
I did a bit more digging and I came up with something I felt might
work so I ordered a bunch to play with. They are from
www.allelectronics.com, part number SMT-89. Its a Oriental Motor
Vexta, PX245-02B-C8 which is listed as having a 1.8 degree step. Its
6volt, .8amp 2 phase. If the picture is correct it looks like it has acollar with set screws to attact to the drive bar. It has 6 leads and is
currently at 5 bucks a piece. I bit the bullet and ordered 6 so I'd have
enough to build two machines. Sure hope these wil l work, I'd hate to
waste 30 bucks but I decided to take a chance.
Tom McGuire(author) wpflum
I think your going to be very happy with those. I like the brass
shaft couplers on them. Five bucks is a really good deal.
wpflum Tom McGuire
I thought so too. I got 6 of them, I figure I can build your design as is
then use it to help make the next version. My original, and on going,
reason for building this is I want to use it to help make pinewood
derby cars. I'd like teach my kids some 3d design and let them play
with creating car shapes in software then have the CNC machine
mill out the basic shape which they can hand finish. With your
current design what is the envelope? It looks l ike its somewhere
around 6 or 7 inches and I need at least 8 and 9 would be best so I
figured instead of offsetting the z axis I'd use the longer piece of pipe
on each side to get a slightly bigger envelope.
wpflum wpflum
Got the motors yesterday. They do come with the brass couplers. I'm
planning a more direct method to connect the all thread to the
motors, I bought 5/16 instead of 1/4 inch thread and am going to
mount it in my lathe and cut off about 1 inch of threads and size i t to
fit the coupler, looks to be about 3/16. I'm planning on doing the
same to the other end but fit that to a bearing that I can mount to the
frame. Harder to get everything alligned but should make for a much
sturdier setup.
hexapod wpflum
You can return anything you buy from them within 30 days. Just
follow instructions on yellow sheet. No return nubers needed justwhat you are returning and do you want a refund or credit. It's that
simple.
userhck Tom McGuire
http://localhost/var/www/apps/conversion/tmp/scratch_3/member/userhck/http://localhost/var/www/apps/conversion/tmp/scratch_3/CUNAX1OF6B7Q2QUhttp://localhost/var/www/apps/conversion/tmp/scratch_3/member/hexapod/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/hexapod/http://localhost/var/www/apps/conversion/tmp/scratch_3/CDNB1RYF6B7Q7D0http://localhost/var/www/apps/conversion/tmp/scratch_3/member/wpflum/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/wpflum/http://localhost/var/www/apps/conversion/tmp/scratch_3/CGJUDVQF6B7Q0CYhttp://localhost/var/www/apps/conversion/tmp/scratch_3/member/wpflum/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/wpflum/http://localhost/var/www/apps/conversion/tmp/scratch_3/CY73F8WF6B7STKAhttp://localhost/var/www/apps/conversion/tmp/scratch_3/member/Tom+McGuire/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/Tom+McGuire/http://localhost/var/www/apps/conversion/tmp/scratch_3/CRAM27BF6B7PZS6http://localhost/var/www/apps/conversion/tmp/scratch_3/member/wpflum/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/wpflum/http://localhost/var/www/apps/conversion/tmp/scratch_3/CM7A3DVF6B7PZM6http://localhost/var/www/apps/conversion/tmp/scratch_3/member/wpflum/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/wpflum/http://www.mpja.com/products.asp?dept=101http://localhost/var/www/apps/conversion/tmp/scratch_3/CB0NBJOF5Y3YVMThttp://localhost/var/www/apps/conversion/tmp/scratch_3/member/Tom+McGuire/http://localhost/var/www/apps/conversion/tmp/scratch_3/member/Tom+McGuire/http://localhost/var/www/apps/conversion/tmp/scratch_3/COG45T6FA190E05http://localhost/var/www/apps/conversion/tmp/scratch_3/member/la3bna/ -
7/27/2019 Easy to Build Desk Top 3 Axis CNC Milling Machine ALLSTEPS
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Thanks!
Tom McGuire(author) fredan
That looks nice. Looks like you used cutting boards. The
thicker the harder the flatter the better. A word of caution and
not to discourage you especially because this design
technique allows you to easily make changes. The bearing
may need to be pressed very firmly to the rail so that the stage
won't shift when milling. The spring may work but you shouldmake sure it's very strong. I also suggest just one bearing in
the center will al low the stage to travel 1/2 way to the left and
1/2 way to the right. It's also good to have the rails extend well
beyond the travel of the stage. Aside from that Id like to say an
awsome job and to al l of you undertaking this project far out,
right on - ride on.
Tom McGuire(author) Tom McGuire
Oh yes...and don't forget to grease the rails. That aluminum wil l
grind into powder.
Tom McGuire(author) userhck
Hey nice job. That looks like it will work (so far). Keep us
posted. People will want to know how it goes for you.
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