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Winner Clock

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Wagner
That is a gorgeous job and a build well worth some pride. Be proud my friend, looking goooooood.
Nelson Collar
 
Research

In order to make 2 small dials for the clock, testing several methods:

1 - Hand paint/hand engrave.
No way; I can't even hand write my name on a presentable way.

2 - V bit engrave on the CNC.
Hard to make plate level/flat on the Z axis. Engraving too wide/bold.

3 - Diamond drag-engrave.
Engraving too shallow; no depth for paint filling

4 - PNP blue toner transfer resist, acid etching.
No good result so far with clothes iron; waiting for pocket laminator arrival.

5 - Dry film photoresist, acid etching.
No good result so far; too many variables (exposure, developer ...); waiting for pocket laminator.

6 - Paint resist, drag engrave CNC, acid etching.
The best result so far.

7- Water slide transfer...

Here some results for method 6:

Resist candidates:
DialTest 008.jpg


Drag engraved samples
DialTest 001.jpg

# 2 didn't survive engraving.

Detail
DialTest 004.jpg


Acid bath. Ferric chloride 1 hour 15 minutes.
DialTest 009.jpg

#6 didn't survive acid, #5 did not go well. (the stamped numbers are wrong)

Cleaned of resist layer
DialTest 010.jpg


Paint filling
DialTest 012.jpg


Detail for #7
DialTest 016.jpg


Sand paper cleaned
DialTest 017.jpg


Detail #1
DialTest 019.jpg


Detail #7
DialTest 022.jpg


The winner
DialTest 023.jpg


The engraver
DialTest 026.jpg


I will try the Water Transfer method, and again the PNP and Dry Photoresist methods when the pocket laminator arrives.

Wagner
 
Wagner

Your are going get it, some of your samples look like you are on the right path.

Good luck

Nelson
 
Gorgeous, love that super glue chuck and the CNC action. If I could learn how to build one and learn how to operate it, well another day.
Looking superb.
Nelson
 
PNP blue toner transfer resist
C118120.jpg

Two of the best results. Don't bother etching, too many flaws.

Dry Film Photoresist
CAM01122.jpg


C123125.jpg

A lot of flaws. The second one deserves etching.

C126127.jpg

I really don't like the chemical processes; there is too many variables. But the Photoresist is worth trying harder.

I've tried my best to clean the brass plate before applying the film and used a good grade laminator, at the recommended temperature.

By the way, I found out that fancy dish soap leaves a disgusting layer of oils on the washed piece.


Wagner
 
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