Hi all, I'm in the process of building a 3DR Simple Delta Printer by JohnSL and am now buying all of the vitamins. My one remaining large purchase is the controller. JohnSL uses the Printrboard, however, I am hessitant to use an all-in-one solution in case something "smokes". I have two Ramps controllers on my two other printers and haven't really used anything else. they're cheap and I know thby umdpru - Delta Machines
Quotejamesdanielv brnrd: the auto bed routing is performed by G29, it needs to be performed after G28 otherwise all settings are lost. also i had some signal issues with my servo jerking back a bit whenever my extruder motor stopped. i fixed it by driving the pulse width pin to high when servo is not in use. I have my servo wires routed thru with my extruder wires to keep things neat, so this soby umdpru - General
tjb1, I'm not trying to make a one size fits all solution. The solution I proposed is for ABS printing with a J-Head. I never pretended that the thermal fuse was a solution to EVERY possible combination of printer design. That would be just silly. Lastly, I'm not trying to prevent a fan from dying, nor am I trying to prevent damage to my printer. I'm trying to prevent my house from burning doby umdpru - Safety & Best Practices
your accelerations are still higher than the MF I3's.by umdpru - Reprappers
I'll have to try that servo disabling setting. I assume it's in the RC servo section? Mine definitely ONLY twitches when moving and particularly so when the Z moves. There must be some cross-talk in the ramps board.by umdpru - Reprappers
On the topic of cable chains. I don't really think they are necessary if you are organizing your wire bundle correctly. I think the MF I3 needs to have either the X-idler or X-motor printed/redeisgned to have a proper cable chain mount made available. Here is a picture of my printer. I bundled the wires and routed them through braided sleeving that I got from cable organizer a long time agoby umdpru - Safety & Best Practices
That's why I measured right at the junction of the PEEK and the heater block. Under normal (my normal) operations, my printer prints at 230C registered on the thermistor. That temperature doesn't mean much when it comes to the thermal fusing. I measured the junction and it measures at approximately 165C. I will probably get a thermal fuse rated for 180C holding. My goal is to prevent a fire. I doby umdpru - Safety & Best Practices
Hi all, Here is a picture of the J-Head on my MakerFarm Prusa I3. I just measured the temperature at the junction of the heater block and the PEEK temperature break/support/guide part of the j-head. My j-head is currently printing at 230C and this junction temperature measured at 165C. It's food for thought. I recently purchased some 200C thermal fuses. I plan on using them, in combination withby umdpru - Safety & Best Practices
Check out zenmasters videos. They are for a makerfarm prusa i3 but the ramps part and firmware videos will be very helpful. He answers ask your questIons in his three videos. I got my bal done with the help of his videos.by umdpru - General
Guys, it's really ready to implement a reference coordinate system in sw to export your stl's in any orientation you desire.by umdpru - Reprappers
The amount of wrap on your z pulley isn't enough, IMO. You'll be stressing the individual teeth considerably. Other than that, it looks good.by umdpru - Reprappers
I'd recommend the makerfarm i3. Colin's communication and support is second to none. I've corresponded with him at 10pm before. Implement auto bed leveling, though, as leveling a big bed and keeping it in level is nearly impossible. I installed auto bed leveling and it's absolutely awesome. Colin's j-heads are built to the proper spec and are very good. I bought a 30amp led power supply for 3by umdpru - Reprappers
Don't you want to set your firmware retraction max setting higher than what you really want to use in your slicer so that the slicer speed isn't limited by the firmware maximum?by umdpru - Reprappers
slic3r defines the bridging speed in the speed section on the print settings tab. You can define a speed outright but can't define it as a percentage of your speedby umdpru - Reprappers
Mine is twitching. It seems to twitch particularly badly when the z axis is moving. I'll try altering the fan pin since I don't use it.by umdpru - Reprappers
A short will surely blow your mosfet. What are you measuring it with? Is the reading accurate? It will be pretty low resistance but not zero.by umdpru - General
That's a pretty complicated part. What printer are you using because 30mm/s feedrate and 35mm/s travel speeds are slow. I use those on my Cupcake CNC. I use 70mm/s and 150mm/s respectively on my I3 and it can go faster than that. Keeping the speed slow may help you prevent any mechanical issues assocaited with a faster feedrate but the print times are going to be through the roof. I also think yby umdpru - General
Aduy nailed it. Your z axis pitch is not compatible with your layer height so the layer height rounds out periodically creating a compressed layer then it starts fresh and happens again. Z wobble would manifest itself on only some sides not all the way around.by umdpru - General
What chains are you making?by umdpru - Safety & Best Practices
I'm having the exact same problem on a part using 1.0.0rc2 standalone. I've gone back to 0.9.10b standalone for now which isn't optimal since my part has thin walls. My Gcode preview for the part in pronterface shows zero offsets but I have now printed two of the same part with a y offset at exactly the same lower and for the exact same amount of offset. The first part had an additional x offsetby umdpru - General
I use thermal paste on my thermistor to get better heat transfer and therefore better temperature readings. I wrapped the thermistor and heater block in self adhesive silicon tape from my local Advance Auto Parts. It's self adhesive and high temperature found int he exhaust section. From what I've read, it's grip INCREASES as it gets hot. I saw the tip on a youtube video showing a hot end build.by umdpru - General
Antslate and I come from the radio control world where we've dealt with safety and fires related to lithium polymer battery charging. Speaking for myself, fire is ALWAYS on my mind. I have a hardwired smoke detector right above my bench where I charge and where my printer now lives. That detector has already caught one small fire nearly immediately and I would recommend to everyone to get one. Thby umdpru - Safety & Best Practices
GT2 belts/pulleys are virtually zero backlash. The same cannot be said for MXL. MXL belts are timing belts, not linear motion belts. You are probably seeing the effects of backlash although I wouldn't expect the error to keep adding like that. Perhaps it would, I don't know. From what I understand, GT2 belts are the ones you should be using for the back-and-forth motion our machines go through.by umdpru - General
I ran into a banned word and it's a really benign adjective used to describe severity and I couldn't believe it was banned. I had to delete one sentence/paragraph at a time and repost to narrow it down to what the word was. I would have NEVER guessed it.by umdpru - Administration, Announcements, Policy
Quotetjb1 I can not find a thermal fuse that cuts off above 280C, the 240C one is only rated to operate at 200C. Operating it above 200C for extended time damages it. I do not see thermal fuses being useful at all for hotend use unless you already determined you do not want to exceed 200-240C(if you can find the one rated to sustain 240C). If your hot end gets hot enough to start trouble thenby umdpru - Safety & Best Practices
Quotetjb1 Quoteumdpru I agree. I just purchased some 240C thermal fuses from amazon. I'm going to install them somewhere near my hotend. I'd still like to see the software failsafes incorporated. Looking at the 240C fuses on Digikey, it says the 240C is only rated to hold at 200C with max spikes of 240C which would be of little use with the all metal hotends and new materials. The datasheet menby umdpru - Safety & Best Practices
Yes, that is definitely not warping. It's layer shifting. What are your other machine parameters?by umdpru - General
Ok, I think I might have this one figured out. I believe I was sent a Taurino Power Mega 2560 instead of a regular Mega 2560. I'll try the drivers tonight.by umdpru - General
I agree. I just purchased some 240C thermal fuses from amazon. I'm going to install them somewhere near my hotend. I'd still like to see the software failsafes incorporated.by umdpru - Safety & Best Practices
Antslate, I found a metal I3 frame at ultimakerby umdpru - Safety & Best Practices