350x400x150mm moving gantry

**bradeyk** · 07-08-2011, 04:03 AM

hi,
i have been looking at making a cnc machine,
i am a uni student studding software engineering,
right now i have made a simple fixed gantry using printers,
but i need more strength and precision.

[nomedia="http://www.youtube.com/watch?v=DBIhvvAZjak"]YouTube - ‪CNC/Plotter made from Printers‬‏[/nomedia]

these are the parts i have ordered

SBR20-400mm(2supported rails+4 SBR20UU bearing blocks).
SBR12-200mm(2supported rails+ 4 SBR12UU bearing blocks).
4 items SHF20 shaft end supports
linear bearings blocks 4 SC20UU
3 anti-backlash ballscrew RM1605-400mm-C7+3set BK/BF12
1 anti-backlash ballscrew RM1605-190mm-C7+1set BK/BF12
4 couplings to suit motors with a 6.35mm shaft

as in the video i have a arduino controller which i have been programming, with my own software on the pc to send the g code, i plan to add SD support

i have some steppers lying around and i plan to use them,
but if there not enough what size would you recommend,
i plan to mostly cut wood,plastic,PCB and maybe some AL.
i also want to make this into a 3d printer

i am not sure what to make it out of
i have been thinking of mdf/hpde
i have enough tools to work with steel/wood/plastic

for a moving gantry i have decided to go with twin x axis.
but what should the layout be,
i have two designs.

**bradeyk** · 07-17-2011, 07:15 PM

The parts have now arrived

**aussiegazza** · 07-18-2011, 06:15 AM

M&G in Fyshwick stock plastics for turning etc. Also lots of milling and lathe tools. You can get 2nd hand Al and brass etc in Collie Street at the back of the metal shop. They do recycling there and sell by the kg.

Welcome.

Garry

**bradeyk** · 07-19-2011, 01:36 AM

sweet thankls

**amoisis** · 07-24-2011, 08:02 PM

will be interesting to see your progress. im trying to decide what to build a x2 mini mill convert to cnc or something like you are building will watch your thread closely

**bradeyk** · 07-24-2011, 10:05 PM

i have now finished the build, it was super easy, but i have misplaced the camera, so i couldn't take pics, but when i find it i will take a vid, and some pics.
using nema 17's for the x and 23's for the y,z the fastest i have pushed it is 1m/min

so far the cost in USD
$530 for the rails, ball-screws
$160 for the controller/driver
motors from scrapped printers,
rotatory tool already had
$20 for mdf,pine and screws
other parts already had
$710 including postage

Total cost $655 AUD

**bradeyk** · 07-25-2011, 07:49 AM

The mess

the controller and drivers

My DIY e chain, Drag Chian

**bradeyk** · 09-13-2011, 01:51 AM

i have dome some work,
i had been busy with uni,

here is my first attempt at cutting a pcb.
http://www.youtube.com/watch?v=KIPlmpQKWVM]first pcb mill - YouTube