[AR] Re: Electroforming Experiment
- From: Ed LeBouthillier <codemonky@xxxxxxxxxxxxx>
- To: arocket@xxxxxxxxxxxxx
- Date: Sun, 14 Jul 2019 11:58:31 -0700
On Sun, 2019-07-14 at 18:28 +0000, Ray Rocket wrote:
You are using one of the commercially available "wax" filaments to
form the coolant channel features?
Any trouble getting the conductive paint on it?
I haven't done that part yet. My plan is to use either a permanent
marker or hot glue gun plastic. The experiment hasn't been done yet (I
just finished the rotary axis the other day); I still have to finish a
mount to the 3D printer (and then my 3D printer's extruder controller
just died, so I have a new board coming Wednesday).
A lot of this is still experimental. I'll report on successful
processes after I see the results.
If somebody wanted to duplicate your results, a modified Eggbot may
be an inexpensive method to apply a resist/filler layer for the
coolant channels. It even has an optional hot wax pen and is all
open source.
Yes, the eggbot was one of the inspirations. However, it seems to lack
accuracy in placement of the pen along the rotating axis. It didn't
seem that it could place the plotter pen to within a few thousandths
along the rotating ("A"? along the X) axis. Thus I decided for a more
purpose-built design. This should be a design that could be used for
just about anything wanting a relatively small rotary axis.
My design is as simple as an eggbot and I'll be open sourcing it as
soon as I'm sure the design is good (I'm pretty sure it's good now,
except for the "live center" portion). But, it presumes that it can be
mounted to a 3D printer for the X and Z axes movements. I've done some
preliminary tests on the rotary axis and it looks perfect (except the
live center). The total cost of the rotary axis was about $40.00 (plus
3D printed parts). This was the stepper motor (which I got on sale for
$7) and the chuck which cost about $30.00 plus two 608 bearings and a
5/16" (8mm) bolt plus a few 4-40 (3mm) screws.
If someone wants the design now, just ask. My desire is to open source
all of this as much as possible.
Cheers,
Ed L
P.S. I've attached the picture of the rotary axis again since it is
part of this discussion.
Attachment:
PB200001b.JPG
Description: JPEG image
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