Search found 419 matches

by dragonator
Sat Sep 05, 2015 12:05 pm
Forum: FDM printing
Topic: Project Tesseract
Replies: 11
Views: 14761

Re: Project Tesseract

Fast forward to now and why this topic is here. I think I may have a solution. Polymers by definition degrade under stress over time. It is what they do, so any plastic conveyor would degrade in under a hundrerd or so prints. Metal on the other hand lasts a lot longer. Easily in the 10.000+ range. M...
by dragonator
Sat Sep 05, 2015 11:48 am
Forum: FDM printing
Topic: Project Tesseract
Replies: 11
Views: 14761

Project Tesseract

Named after a 4 dimensional cube, and somehow no one has thought of naming a printer this way yet. This is going to be the first entry of the development of my new FDM printer, Tesseract. The idea has been there for a while now. How to make a printer that makes printing a lot of stuff interesting. F...
by dragonator
Fri Sep 04, 2015 9:19 am
Forum: I made a:
Topic: AER9 Laser Rifle
Replies: 25
Views: 21382

AER9 Laser Rifle

Got an AER9 Laser Rifle from Fallout printed. Really? wow! That must have taken forever. Added more sound or REAL actual lasers? Show it off here.
by dragonator
Mon Aug 31, 2015 6:53 pm
Forum: 3DP printing
Topic: Brainstorming: Compact piston drives
Replies: 10
Views: 9943

Re: Brainstorming: Compact piston drives

I am not probably not capable of making a full sized answer until at least Wednesday, so I'll throw my idea here now and add images of it later (publishing stuff right now, and finishing other stuff). There is a set of systems I say on some ancient 3DP printer (think 80s) made by a guy I know who wa...
by dragonator
Sun Aug 30, 2015 8:48 pm
Forum: 3DP printing
Topic: Vacuum based automatic depowdering
Replies: 4
Views: 4831

Re: Vacuum based automatic depowdering

Depending on the powder, efficient recovery is necessary. Zcorp powder (the original) costs around $100/kg. It is ridiculously expensive. Granted that if you make it yourself, it could be cheaper, decent filtering is still a preferred thing. I think that you can make the 5cm gap as little as 1cm wit...
by dragonator
Sat Aug 29, 2015 10:52 am
Forum: 3DP printing
Topic: Vacuum based automatic depowdering
Replies: 4
Views: 4831

Re: Vacuum based automatic depowdering

The basics I have had in my mind as well, but I like how detailed you thought of it here. The ledge thing is something I like in particular. It fixes quite a few problems I had with my design. In a way, this is how Z-corp printers unload themselves. They claim they can get rid of 70% of the powder t...
by dragonator
Tue Aug 25, 2015 9:21 pm
Forum: 3DP printing
Topic: Water-fused plastic as a print medium?
Replies: 4
Views: 4857

Re: Water-fused plastic as a print medium?

If you can manage to print SLA resin with a printhead you basically have an Objet printer, one of the most versatile techniques around. The real challenge is that most printheads are bubblejets and they need to heat the liquid to print them. I do not know if bubblejets can handle light sensitive res...
by dragonator
Tue Aug 25, 2015 10:31 am
Forum: 3DP printing
Topic: Water-fused plastic as a print medium?
Replies: 4
Views: 4857

Re: Water-fused plastic as a print medium?

From what I have gathered in the datasheet, they are plastic beads covered in a PVA glue. Water melts the surface and when the water evaporates, the glue sets again. Grinding the beads up will probably leave a lot of the powder without glue, because it is only applied to the surface (from what I hav...
by dragonator
Mon Aug 24, 2015 5:34 pm
Forum: 3DP printing
Topic: BrundleFab - a powder thermal fusion printer
Replies: 13
Views: 15416

Re: BrundleFab - a powder thermal fusion printer

Neat way of building parts. I never really considered aluminium door signs (nor did I know of their existence) but 0.25mm (0.01") aluminium should be strong enough if the design is right. I don't know if $2 is a bit much for the thickness and surface area, but it is more available than most sources ...
by dragonator
Mon Aug 24, 2015 5:18 pm
Forum: I made a:
Topic: Pip-Boy 3000
Replies: 5
Views: 9747

Re: Pip-Boy 3000

There is a design floating around that does indeed have that included in the model, but I couldn't tell you where it is, I don't know.