cpresser

The #repair of this day is the water cooling circuit of the laser-tube in #CCCAC which broke last weekend.

The fix was made with a 3D printed part (modeled in #FreeCAD) that fits over the broken barb.
Unfortunately the FDM print was not watertight even with 100% infill. So I had to put even more epoxy around the part. Not it does not look as nice, but It seems to work.
No drops after 30min of runtime.

https://chaos.social/@cccpresser/116189703366747334

Mar 13 at 8:00pmWeb
Show threadshorkMar 13
@cccpresser aw, would've been nice to do some testing with higher temps for better layer adhesion, but that design would've probably had to have less overhangs for that
Show threadcpresserMar 13

@noiob You can print a stupid 'pressure vessel' for further tests.
We have plenty of fittings left we can use for experimenting with water pressure.

I would really like to know if one can get the FDM print watertight. Perhaps bricklayer-mode?

Show threadshorkMar 13
@cccpresser you can make PETG layers melt into each other if you get them really hot and overextrude some. but it takes some tuning and all I got to work was messier. Also overhangs will droop a lot https://www.youtube.com/watch?v=9qb25Gi4Jv0
Transparent FDM 3D Prints are Clearly Stronger!

Using a special parameter, you can't only print transparent FDM 3D prints - this parameter will also make your parts super strong!Head to http://squarespace....

YouTube
Show threadndMar 13
@cccpresser @noiob you can print in abs and use acetone smoothing, works without infill.
Show threadshorkMar 13
@nd @cccpresser no, I can't print ABS
Show threadcroutonMar 13
@cccpresser btw consider using g/flex epoxy from WEST systems or equivalent, it allows for some movement without breaking.
Show threadpinkmoon6d ago

@cccpresser

A 10,000 nm CO₂ laser tube? Looks good.

Show threadcpresser6d ago
@pinkmoon I have not yet tested it it actually lazzzers after the repair. Let's hope it does.
Show threadpinkmoon6d ago

@cccpresser

Using silicone on glass would also be a solution, similar to how aquariums are sealed with silicone.