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Re: STL files crash windows explorer - 11 years ago

Quotejimdaug I gotta say this was all new to me, but the problem ended up being an extension called SynShellEx Class. Its some kind of thumbnail generator for Autodesk Moldflow, which was installed with Inventor 2012. The ShellExView description of it is SYNSHELL Dynamic Link Library for Autodesk Moldflow. I don't know if I have to reinstall Inventor or if the install can be repaired or what. For

by Creo - General

Re: What is the maximum bowden tube length admissible? - 11 years ago

Quotezelogik Or put two stepper in serial with mk7 hobbed gear and a sort of clutch for one motor only... Yes over priced and over complicated ... need another solution What you mention is similar to what is done on wire feed welders when welding aluminum. shouldn't be super complicated and would be good solution for a LARGE printer.

by Creo - Reprappers

Re: Dr Simon Ford, University of Cambridge: Reprap 3d printers are lower-quality. - 11 years ago

QuoteTraumflug RepRap technology is just fine. Cheaper, weaker frames can be compensated with lower print speeds easily. Extruders are pretty reliable. Software does its work. Or you can reinforce your frame to keep up print speeds. QuoteTraumflug What RepRap lacks from the professional perspective is emphasis on professional demands. If a printer produces its first part, it's half done at b

by Creo - General

Re: Design nearly done - construction started... - 11 years ago

Changing directions wont affect the setup I described and that is the whole reason for my attempting to adapt it to repraps. A compression spring pushing a bolt linearly would be affected, but a torsion spring turning the scew will not. Picture a leadscrew, like you'll find on your machining equipment, screwed into a stationary nut and unconstrained at both ends.....now apply a pure axial compr

by Creo - Reprappers

Re: Design nearly done - construction started... - 11 years ago

Incredible build, you sure have put a lot of time into it....I applaud you . What you might be able to do on your belt tensioners is something I am working on. It is a WIP so I can't verify yet its effectiveness....but, it is the same principal used by the cam chain tensioner on many motorcycles. Like many belts used by reprappers, a cam chain depends on teeth engagement, not high tension to c

by Creo - Reprappers

Re: CoreXY Build - 11 years ago

Good job. I have been working on a very similar printer. Using V slot rail, standard t-slot, and openrail for the xy linear motion. Z axis will be Ultimaker style with dual 12mm rods for constraint and TR 10x2 precision leadscrew. I also designed around dual E3D hotends. I haven't completed design of z axis yet but I have about 550mm of leadscrew for the Z travel, xy will be 250x320mm(borosi

by Creo - Reprappers

Re: mUVe3D releases improved Marlin firmware for all 3D printers - 12 years ago

I think this is excellent! I use Marlin in my FFF printers and would love for this to get rolled into Marlin. Interested in seeing the code for the peel move and how difficult it would be to recode to a wipe move controlling a stepper and a wipe bar. I want to make a similar printer that can use DSM-Somos resins. If I ever get the right laser, I'm going to attempt it.

by Creo - General

Re: temp.c and heatbed with relay - 12 years ago

Thanks! 1. Great! Reduced cycling is exactly what I was trying to accomplish. 2. I think I understand, thanks. That is a good idea, I think I will tweak the BED_LIMIT_SWITCHING. 3. The bit shift operation made sense as soon as you explained that Marlin's PWM counter is 0-127. Only thing I don't understand is that when MAX_BED_POWER 255 it still cycles constantly while heating to target temp

by Creo - Firmware - mainstream and related support

Re: What would cause controller to reset back to defaults? - 12 years ago

Can anyone expand on how the eeprom works? and/or where in the firmware the default settings are that will be loaded into eeprom when reset to defaults? I currently have eeprom disabled cause when I was calibrating my printer, I would make the e-steps change in the firmware and reflash. Worked great and then I decided to try enabling eeprom so I could make "on the fly" changes while printing bu

by Creo - Controllers

temp.c and heatbed with relay - 12 years ago

I came across an issue and was wondering if someone with better programming skills can help explain the part of temperature.c that handles bed heating? Here is my info and then my problem. Info: Prusa i3 with prusa 12v pcb heatbed and RAMBO controller loaded with Erik Zalm's Marlin tweaked for my prusa. Issue: Had the plastic connector to the RAMBO start to melt and cause intermittent bed heati

by Creo - Firmware - mainstream and related support