Hi,
I’ve been adding some stuff to a github repo with different ideas etc
There is a github repo for a discussion? perhaps for storing settings and
etc but not a great location for talking about things.
Its more a set of examples / list of parts / notes that I pulled together
when building my own one at home
Any discussion i agree is best kept to the mailing lists etc
I was originally asked by Chris for a hypothetical example but I’m fully
open to different ideas / models / everything etc
I’ll post the link once I’ve finished adding in some more bits in
(different options for stepper drivers / electronics etc)
- I like the idea of being able to add different types of heads and
adapt later on, such as drag knifes / 5 or 6 axis with a lathe chuck / 3d
print head / uv exposure head for pcbs / edm etc, the vslot on the z axis
should make this easier.
The product Tas linked to has the provision for fitting with different
heads
Yeah I just meant if we decided to go for something else like an x-carve or
a shapeoko for example, they don’t seem to have slots for the heads
5/6 axis etc can be fitted to the little CNC machine we already acquired
from MadLAB (WSFG printed on the side)
UV exposure head???
The guys over at this site http://www.diyouware.com/ managed to figure out
how to get a PHR-803T blu-ray pickup working
the idea is you put some UV sensitive board underneath then “print” the pcb
tracks with the head
although they’re design seems to move the board around instead of the head
to avoid vibration issues
Also it would not work well as a 3D printer as the build area would be
massively hard to temperature control.
I agree, also you wouldn’t get much on the Z Height without replacing the
extrusion on the Z Axis
(but that shouldn’t stop us from trying 
)
- For the software personally I think chillipepr might be the best way
to go to start (http://chilipeppr.com/grbl) with a cheap controller
board, although this means the firmware would probably need to be grbl /
tinyg / tinyg2 which in turn affects which board we use
I would like to hear Ian and Toms feedback on this as they are building
one for LAMM so will have hands on experience
- Turning 3d models into g-code involves CAM software, (like a slicer
for a 3d printer) usually cam software has a thing called a pre-processor
to output for different boards / firmwares, so that’s worth taking into
consideration (e.g. hsmworks, asprire, jscut for cam)
again LAMM peeps
- Personally I think an ideal setup would be a beaglebone green with an
rpi3 / touch screen using machinekit. since it has lots of fancy realtime
stuff / motion control such as using the PRU’s of the beaglebone. (but I
haven’t looked into setting that up yet)
Once Funded and Built, in the medium term would it be worth getting some
experience on the WSFG CNC?
That’s one option
I’ve managed to get an old emf badge from Bob that’s got the same IC as an
arduino due on it
I’m hoping I can combine it with the existing polulu drivers from the
proxon mill and a custom breakout board to make the proxon use chillipepr /
tinyg2. I think I’ve got the tinyg2 side figured out for that one and just
need to get around to making the break out board
Would this not risk permanent deformation? as plastics tend not to return
once relaxed?
In the cnc forums there’s been a few different discussions of different
mixtures of materials
although from the looks of it some of it is more for damping vibration than
adding strength
I don’t have a link to hand, but if you google cnc expoxy granite for
example
Another link is
)
)
