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NEL957

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Wagner
You and Chriss almost got me hooked on the brassie click things.
I love seeing all you are doing and one day I will take the next step.
What are the dimension on that clock?
Looking good
 
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David S

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Continues to look good Wagner. What are you using for weight?

Also why do you print the template on the wheels if you are using CNC? I can understand if I was going to do the crossings with a piercing saw.

David
 
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WMello

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Hi David.

Using Lead. Have melted it onto the canisters yesterday.
The templates in paper helps for cutting the blank on the band saw (and to layout the various blanks onto the original plate, avoiding too much waste).

Wagner
 

NEL957

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Wagner
That looks great, Are the weights aluminium with brass top and bottom? Is it filled with lead?
The itch is just about irresistible!
You are almost finished and you are hearing that thing come alive. Tick-Tock-Tick-Tock-Tick-Tock-Tick-Tock.
I can almost hear it.
Way to go Wagner
 
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WMello

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Hi Nel957
The canisters are 4 in OD aluminium tube, caps 1/2 in aluminium plate with 1/32 brass bandings (like venner in woodworking)
Inside, cast lead. The weight is about 16 and the bob 10 Lbs.
There is still a lot to do, but the thing is running.
Going to concentrate now on dials and hands.

Wagner
 

NEL957

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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
 
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WMello

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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
 

NEL957

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Wagner

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

Good luck

Nelson
 

NEL957

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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
 
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WMello

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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
 

wrmiller

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Beautiful! Kinda big for a grandfather case though? ;)

So the electronics/transducer is being used to 'time' the movement?
 
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Hi Bill, thank you.

Yes, the electronic gizmo is used to test the movement timing and beat. It receives ticks from the GPS system and compares with the clock ticks via acoustic or optical transducers. Also there is a Temperature and Humidity sensor.

Wagner
 

wrmiller

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Man, this is going to look so cool! :)
 
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CNC Drag Knife cutting vinyl over glass (for sand blasting)

 
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