Milling Acryl: http://youtu.be/ijrFrTtQzSc made another Arduino case and a little video of the milling

General CNC CNC Routers
, ,
1

Milling Acryl: http://youtu.be/ijrFrTtQzSc

made another Arduino case and a little video of the milling process. Four minutes and a case is ready. I am just working on a dxf-library for microcontrollers (pi,arduino,odroid,nxp,etc.). You can find it on github soon…

2

This is fantastic. Please update us when the files are on github.

3

I’m interested, been trying to mill a little polycarbonate, what are you using for feeds and speeds?

4

Can you advise what bit and router speed you used, that looks like a clean cut, with no melting.

5

I’ve been doing acrylic for years on my router. 1/16" 2FL EM, 130 IPM, as slow as the router will go, about 8k rpm, 1D depth of cut. this works well for extruded acrylic. Cast acrylic has a much wider tolerance for spindle speed. As a general rule, if it’s melting, speed up the feed or slow down the spindle till it’s not melting any more. A few test cuts and it’s easy to get dialed in.

6

Thanks Paul!

7

@Bruce_Lunde - as Paul already said. I am using a 2.5mm endmill with 2 two blades and a speed of 70mm/sec in five passes. As Paul alrady said - if it is melting try to speed up up the feeds. @Dat_Chu I’ll give a note soon. Greetings!

8

Re: dxf files. Are you just making base plates, or, are you designing boxes? If you are just doing base plates, scale line drawings imported to inkscape and properly converted to dxf files should be pretty easy and painless.