Quoteohioplastics China has better living standards today because of capitalism.by akhlut - General
I'd get away from ramps and to to a completly separate system. PID controllers are relatively cheap now, and thermocouples arent expensive either. Auber instruments has a decent selection. I assume that youre going to use a common $20 - 30 electric heater? Probably a good idea to segregate the fan and heating element to separate controls so that the fan is constantly on and the heating elemenby akhlut - General
So based on this, can we say that boards that perform port grouping for critical signals have an edge in terms of performance? If so then the RAMBo should have a performance edge over the other boards. This will probably be irrelevant soon with all the ARM options coming online...by akhlut - Controllers
I got bored last night and started to look at the port assignments of the various 2560 board iterations (RAMPS, RUMBA, RAMBO, MEGATRONICS). Some boards group specific functional pins together on a single port, while others have seemingly random pin assignments. For instance, the RAMBO has all the enable pins on one port, the step pins on another and the direction pins on yet another. Anotherby akhlut - Controllers
This is exactly what I'm working on - pulling fresh air from outside my heated chamber to cool the nozzles. Glad to see the squirrel cage blower works well - my first attempt with PC fans failed miserably. And I didn't get why you would contain the thermal break inside the X-carriage. But now that I see you're cooling it it makes total sense. What do you think about scaling the machine? Beefby akhlut - CoreXY Machines
QuoteDust So it would seem he has questionable morels himself. Hopefully they're tasty morels.by akhlut - General
Beautiful machine! Been playing with a coreXY design for a little while now. Your results are great. Any chance you could post a video of the motion at higher speeds/printing?by akhlut - CoreXY Machines
Could you use an ADuM3440 for level translation to external stepper drivers?by akhlut - Controllers
Yes. You'd have to hack the smoke detector, but it certainly can be done.by akhlut - Safety & Best Practices
Why not just properly dress the cables instead of fire extingushers, etc? 20' of expandable mesh and some heatshrink would clean you right up and be a whole lot cheaper, not to mention safer. +1 for having a smoke detector in close proximity.by akhlut - Safety & Best Practices
bobc - there is nothing wrong with having OCD when playing with this stuff. Put me down for a v2 board when you get this one made. I haven't had the time to solder up the first board - too busy with work/refitting my printers/shapeoko/etc to make a go of it. Email or PM me with the particulars when the board goes to fab so I can get you some cash to offset your development costs.by akhlut - Controllers
Good! Some folks would have tossed the board for a new one. Better to repair than replace. While the RUMBA is 'open source' it's not very friendly. It's designed in Altium (I can't imagine how expensive a seat is), so you can't open the files to generate a BOM. Honestly, you really don't even need that diode - it's just there to protect the electronics in case of a polarity reversal. Buby akhlut - Controllers
First off, do not connect two beds to RAMPS1.4. The fan port isn't designed to handle that much current - you'll blow that 5A PTC fuse in short order. You really should use an external driver to safely run a bed that large. Look at the sevenswitch. As far as stepper motors, look for something in the 3V/1.6A range with at least 45 oz-in of torque. You want to run your steppers at multiples ofby akhlut - General
Can you desolder that diode? Looking at the schematic it looks to be D6.by akhlut - Controllers
Civility. Use it.by akhlut - Developers
You need to maintain a higher build envelope temperature.by akhlut - General
Welcome to the wonderful world of 3D printing, where no tool does everything.by akhlut - General
netfabb studio basic will let you re-orient .stl's for printing.by akhlut - General
Using an SSR is pretty simple. The + and - wires from your electronics heated bed port connect directly to the low-voltage side of the SSR (polarity is important here). Take a plug and cord off of a defunct appliance and split the cord into hot and neutral legs. Wire one leg directly to the SSR and the other directly to the heated bed. Next you need a jumper from the remaining heated bed termby akhlut - General
AC powered heated bed - heats up almost as fast as my J-head. 10mm shafts +1 for Acetal/bronze bushings instead of LMxUU's I'll second the 24V supply. Just better. Not shilling here, but panucatt's DRV8825 drivers have been rock-solid for me @ 8x with 0.9 motors. As far as the nozzle if you're happy with the Jhead than keep it. I've yet to see a print-for-print comparison between a Jheadby akhlut - General
I'd take some sandpaper to it and sand that brass down to get rid of the deformed tip. What's the worst that can happen? I'd be hesitant to use the dremel except at very low speeds.by akhlut - General
Any chance that someone in the UK could interview the fellow who got caught up in this police raid? I think people would be very interested to hear his story.by akhlut - RepRap magazine
HaveBlue, If I search for 3D printed guns before 7/1/2012 I get a couple of hits referring to your accomplishment (which it is!) and then there are results for 3D printed nerf guns and adding hot glue guns to 3D printers, etc. The media was aware of it to be sure, but I don't think there was a hysteria. Perhaps you have a different recollection of it given that you were in the middle of it.by akhlut - General
It was his idea to push it in everyone's face, wasn't it? billyzelsnack Wrote: ------------------------------------------------------- > I know right. Cuz if Cody Wilson would not of 3D > printed a gun then a 3D printed gun would never > exist. I can go on.by akhlut - General