Pic looks great!
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You could use the epoxy nut to take up the backlash of the steel nut.
I'm not sure how I to go about maintaining a relationship between the two?
Add graphite to the epoxy to reduce the friction.
West System sells it, I've used it, and it works great.
Straight epoxy would have too much friction.
Ideally you want the contact surface to be mostly graphite.
You could mix two batches, the first one you go overboard with the graphite.
The second coating is just a backup.
You could even make split epoxy nuts, such that you can adjust the grip, and clearance.
If you haven't cast over a threaded rod, conduct an experiment.
The type, and amount of mold release will dictate how easy/hard it will be to remove the cast nut.
WEST SYSTEM
#423 Graphite Powder - 12 OZ
423 Graphite Powder is a fine black powder that can be mixed with WEST SYSTEM epoxy to
produce a low-friction exterior coating with increased scuff resistance and durability.
Epoxy/graphite is commonly used as a bearing surface,...
[www.westmarine.com]
You could use the epoxy nut to take up the backlash of the steel nut.
I'm not sure how I to go about maintaining a relationship between the two?
Add graphite to the epoxy to reduce the friction.
West System sells it, I've used it, and it works great.
Straight epoxy would have too much friction.
Ideally you want the contact surface to be mostly graphite.
You could mix two batches, the first one you go overboard with the graphite.
The second coating is just a backup.
You could even make split epoxy nuts, such that you can adjust the grip, and clearance.
If you haven't cast over a threaded rod, conduct an experiment.
The type, and amount of mold release will dictate how easy/hard it will be to remove the cast nut.
WEST SYSTEM
#423 Graphite Powder - 12 OZ
423 Graphite Powder is a fine black powder that can be mixed with WEST SYSTEM epoxy to
produce a low-friction exterior coating with increased scuff resistance and durability.
Epoxy/graphite is commonly used as a bearing surface,...
[www.westmarine.com]