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Detroit Maker Faire 2016
Posted: Mon Jul 18, 2016 2:47 pm
by Proto
Hey dee oh all
Of course, I'm not sure if I put this in the right forum. Oh Well
I just writing a quick note to say that I'm going to be at the 2016 Detroit Maker Faire along with my trusty Rostock Maxx v1. I will be setup at the 501st/Rebel Legion booth all weekend.
Looking forward to it
Proto
aka Mike
Re: Detroit Maker Faire 2016
Posted: Mon Jul 18, 2016 3:13 pm
by Xenocrates
I'll be there as well, with the rocketry groups out on the lawn. Anyone else who's planning on coming (besides the SeemeCNC folks, as that's pretty much expected from them), you're welcome to stop by and chat, or whatever else.
Re: Detroit Maker Faire 2016
Posted: Mon Jul 18, 2016 7:04 pm
by PartDaddy
rocketry, hmmm, I have a rather large rocket needing launched by someone...
Re: Detroit Maker Faire 2016
Posted: Mon Jul 18, 2016 7:12 pm
by Xenocrates
If it's the PLA one from MRRF, it needs some serious rocket surgery first.
Re: Detroit Maker Faire 2016
Posted: Mon Jul 18, 2016 7:18 pm
by Proto
PartDaddy wrote:rocketry, hmmm, I have a rather large rocket needing launched by someone...
If I ask REAL nice, could you bring an extra Maxx Build Plate with you. Mine is a bit... uhm... cratered
Re: Detroit Maker Faire 2016
Posted: Mon Jul 18, 2016 7:25 pm
by barry99705
Xenocrates wrote:If it's the PLA one from MRRF, it needs some serious rocket surgery first.
Or a couple gallons of acetone...
Re: Detroit Maker Faire 2016
Posted: Mon Jul 18, 2016 7:31 pm
by Xenocrates
barry99705 wrote:Xenocrates wrote:If it's the PLA one from MRRF, it needs some serious rocket surgery first.
Or a couple gallons of acetone...
Acetone doesn't touch PLA, and I was more concerned by the lack of a shock cord mount, motor mount, guide rail lugs, or pressure ports, not to mention that the structure while thicker than most body tubes, and stronger than almost any small rocket, lacks the strength that the fiberglass or carbon fiber wrapping gives to HPR's, and which is very much needed.
Re: Detroit Maker Faire 2016
Posted: Mon Jul 18, 2016 8:23 pm
by barry99705
Xenocrates wrote:barry99705 wrote:Xenocrates wrote:If it's the PLA one from MRRF, it needs some serious rocket surgery first.
Or a couple gallons of acetone...
Acetone doesn't touch PLA, and I was more concerned by the lack of a shock cord mount, motor mount, guide rail lugs, or pressure ports, not to mention that the structure while thicker than most body tubes, and stronger than almost any small rocket, lacks the strength that the fiberglass or carbon fiber wrapping gives to HPR's, and which is very much needed.
Pretty sure partdaddy prints in abs, but I could be wrong.
Re: Detroit Maker Faire 2016
Posted: Mon Jul 18, 2016 8:55 pm
by Xenocrates
Not sure what Partdaddy himself prints in, but the Partdaddy prints in PLA, as he says here:
4. PLA is all I care to print with. It doesn't really shrink. Now, some filament manufacturers probably put a petroleum base colorant in their filaments. It's cheaper. The problem is that the petroleum base colorant shrinks, which = warping. My extruder design can extrude high temp. I've had it sit at 280C for a while. Doesn't matter. There's isn't teflon or linear. Just a smooth steel bore. HDPE and PP extrude well. A change might be needed to the screw and hot end to make it work right. We machined deeper grooves for the pellets for PLA because it's sticky and needed more input to feed better. While petroleum based plastics seemed to feed easier because they don't seem to act as sticky as PLA when melting. Haven't tried it, but a thermoplastic urethane elastomer (ninja flex like stuff) would probably extrude well. Nylon too. Your problem will be shrink, and will prevent you from using it. Like Taulman filaments, these exotic materials need to be a co-polymer blend to work. Just my opinion here. Shrink is a problem on this scale of printing. Even glass filled nylon shrinks too much, about 0.007 inch / inch. With glass filled nylon you'll shrink almost 3/16" over a 24" cross section. PLA is the magic stuff that allows it to work. If PLA didn't exist, I wouldn't have even bothered to make this machine.