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Mechanical Watch: Exploded View

(fellerts.no)
1168 points fellerts | 2 comments | 22 Jun 25 14:56 UTC | HN request time: 0s | source
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amelius ◴[22 Jun 25 15:52 UTC] No.44347898[source]▶
Wouldn't it make more sense to add the parts and epoxy layer-by-layer? So you don't need the sticks to hold everything together.

(Of course that means creating a new vacuum for every layer, probably).

replies(1): >>44347908 #
rusbus ◴[22 Jun 25 15:53 UTC] No.44347908[source]▶
perhaps you did not read the post—the author attempted layer-by-layer first but discovered it was impossible to get a smooth final result.

This is apparently a well known issue among people who create resin-cast structures.

replies(1): >>44348037 #
amelius ◴[22 Jun 25 16:08 UTC] No.44348037[source]▶
I think it may still work if you don't wait until the last layer has completely cured. The viscosity just has to be high enough to be able to suspend the artifacts.
replies(1): >>44348043 #
1. istjohn ◴[22 Jun 25 16:09 UTC] No.44348043[source]▶
Again, you may want to read tfa
replies(1): >>44348136 #
2. amelius ◴[22 Jun 25 16:20 UTC] No.44348136[source]▶
This sums it up:

"To achieve the effect I want, I need around 20 layers for a regular pocket watch movement. If I were to cast each layer in a transparent container, adding components and epoxy as the previous layer was half-cured, I would be doing nothing else for a solid week."