Got a 3D printer now, it's fun!

[jimmyg]

Farkin pf. Rockets to vag, guns to skids. Its all here. Gold.

[jimmyg]

Guess the next step is ceramic printers. Pistons that give no farks for heat. Blocks, heads, valves. Dildos that dont need lube.

[takai]

Any of you guys with 3D printers have an Aus supplier for drive belts and bits like that? CBC are relatively useless, not being able to find the part despite being given the Gates part number, and have just recommended trying an RC hobby place....

[Billzilla]

This is all I can think of sorry - http://store.3dprintingsystems.com/Parts
He sells other brands of printer, those might have a belt that's right if the UP one isn't.

[PLAYA]

Just bought a replicator 2 at mine I work at so will test it out soon

Sent from my Nexus 4 using Tapatalk 2

[takai]

This is all I can think of sorry - http://store.3dprintingsystems.com/Parts
He sells other brands of printer, those might have a belt that's right if the UP one isn't.

Thanks, but in a hurry for these bits. Found BilbyCNC and ordered from them.

[JamesB]

While my Form 1 3D printer is probably still 2 months away from shipping, here's a (mostly time lapse) video of the first test print made by a recipient of one of the early deliveries.

There were a few flaws in the .stl source file and the Form 1 print driver is still being developed (currently at version 0.8.1), but for a first run, the result's pretty damn good.

[Billzilla]

Very nice. What's the layer thickness again?

[JamesB]

Very nice. What's the layer thickness again?

Build Volume:
125 x 125 x 165 mm
4.9 x 4.9 x 6.5 in

Min Feature Size:
300 microns
(0.012 inches)

Min Layer Thickness:
Z Axis Resolution
25 microns
(0.001 inches)

[Benonymous]

I pleased to see you might actually get your printer James. For a while, it looked pretty shaky. Excellent resolution on that print, I can't wait to see what you produce with it when it arrives

[JamesB]

I pleased to see you might actually get your printer James. For a while, it looked pretty shaky. Excellent resolution on that print, I can't wait to see what you produce with it when it arrives

I'm still hoping that nothing goes wrong with the production/delivery/legals. I really won't stop worrying until the printer is delivered.

[AzzurrA]

Hey Bill,
Any idea what sort of RPM a printed prop/blade would hold up to?
I'm looking at building a RC Horten Ho-229 with twin EDF's from foam, and want to counter-rotate one of the fans. Problem is I can't seem to find any fans in the size I'm looking at (around 55 - 65mm) that are made for reverse rotation. If a printed fan blade could withstand ~35,000 - 40,000 rpm it could be an option

[Billzilla]

Hey Bill,
Any idea what sort of RPM a printed prop/blade would hold up to?
I'm looking at building a RC Horten Ho-229 with twin EDF's from foam, and want to counter-rotate one of the fans. Problem is I can't seem to find any fans in the size I'm looking at (around 55 - 65mm) that are made for reverse rotation. If a printed fan blade could withstand ~35,000 - 40,000 rpm it could be an option

I'd trust one to hang on the wall, but not on an electric motor.
Any reason you want to spin one the other way? I can't think of any aerodynamic reasons.

[AzzurrA]

Apparently with the bat-tail design of the 229, as soon as you start passing exhaust over it in the 'standard' configuration, it causes mass instability and they basically just fall out of the sky. People have got around this by adding an extra fin under the tail, or angling the exhaust up and away by using thrust/extension tubes. One theory is that this instability could be caused by both engines/exhaust flow rotating the same way (which wasn't an issue with the real plane), effectively meaning one lot of exhaust is rotating/flowing away from the tail over the wing more, and the other is flowing the same way, straight over the tail... so I thought if it was easy enough to make/find, I'd try counter rotating one, so that both exhausts rotate out and away from the tail, if that makes sense?

[Billzilla]

Apparently with the bat-tail design of the 229, as soon as you start passing exhaust over it in the 'standard' configuration, it causes mass instability and they basically just fall out of the sky. People have got around this by adding an extra fin under the tail, or angling the exhaust up and away by using thrust/extension tubes. One theory is that this instability could be caused by both engines/exhaust flow rotating the same way (which wasn't an issue with the real plane), effectively meaning one lot of exhaust is rotating/flowing away from the tail over the wing more, and the other is flowing the same way, straight over the tail... so I thought if it was easy enough to make/find, I'd try counter rotating one, so that both exhausts rotate out and away from the tail, if that makes sense?

Just put some straightening vanes in the exhaust flow so there's no spiral flow.

I have used and recommend drinking straws for such thing