foehnsturm
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3D Prints
Everything posted by foehnsturm
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... some progress. Learned how to print reliable with PLA HT and finished the first dock.
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ended Community Contest, part 1 | The Ultibot
foehnsturm replied to SandervG's topic in Coffee corner
Well, I think my contributions would be unofficial because not printed on a UM 8) Anyway, one attempt before @Labern might show us all how it's done ...
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Exactly the same setup. I want to use the "old" worm gear print heads for 3 mm filament on the corexy as well. Speed and mass inertia are no problem. The print head only fell down twice in the beginning when there was heavy over-extrusion and it caught a raised edge.
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... finally, a boat. Quality is fairly good, so it's time to return to the actual topic of this thread ...
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No dedicated guides, the only thing with flanges are the pulleys and there are washers between the idlers in the opposite corners. I tried to level the belt path as good as possible.
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As far as I remember I paid approx 50 € per rail incl. sliding block (Misumi) No more prints atm. Just printing the printhead again on the UM with PLA HT for better temperature resistance. Dual? Puh - still some way to go. I want to incorporate the tool changing logics (no gcode post-processing anymore, just want to set tool offsets and use T0, T1, the printer then should perform the required movements and priming/wiping routines on its own.) into smoothieware.
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It's a printed part, a laser cut aluminum part (will change to steel because of the threaded holes), some bolts and ball bearings. The attachment of the x-rail is questionable. No issues so far but might be too fragile in the long run. And it needs a cable guidance.
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Oh yes, I am. After two years with 3D printing, my feeling is that sometimes I know what I'm doing.
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... almost heat resistant: sugru.com. Not rated for that temperature but withstanding it quite well.
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I'm happy. Holes are M5. Bed and z-axis are working very well. Some ringing due to quite aggressive acceleration and junction_deviation (Marlin : jerk) settings I suppose.
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Seems to print. Looks like the robot is starting to get bored as he hunches his shoulders now ...
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@Labern, will do that. The wiring is a mess. @Skimmy, thanks! No resistors needed? Smoothieboard only does PWM as far as I know. However the frequency is adjustable. But as the corresponding variable is measures in milliseconds, I doubt it will do more than 1 kHz.
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made a mistake it's actually 13:60:O
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I strongly suspect that. It's a 13:50 reduction now (1:4.6)
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BTW, for anyone looking for gear wheels with less than 18 teeth (module 0.5) with a 5 mm bore (which I found quite hard to source): link
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Ok, this pancake stepper definitely needs a fan. But the whole print head would become quite bulky then. So I made my own drive wheel / gear combo. The new gearbox will be 18 mm instead of 30 mm in thickness.
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Thanks a lot. Would be definitely worth a try. I just connected the fan (conrad.de, brand x-fan) to an adjustable power supply. In fact, it runs from 12V down to 3V and even starts with a voltage as low as that.
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Well electrical engineering was my minor subject at the university. But I hardly remember a thing ... The fan I'm using on the UMO has a start voltage of 8V (max 12V). Does this mean anything regarding the controllability?
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it's only a workaround. I want to use a pwm-able crossflow fan. But it's 130 bucks and earliest possible delivery mid November.
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Alive ... The cooling system (and the wiring and, and ...) still needs some work to be done ;-)
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Hacking UM to cut stuff...
foehnsturm replied to drayson's topic in Third party products & modifications
I'll keep an eye on this I'd love to have a laser tool head for the new printer. And smoothieware already has a working laser module.
