Quick update, I got the calibration video done, not my best work, but it isn't easy to setup a Hang printer. Now that it has a more permeate home I should be able to set it up and just let it print.by brotherchris - General
So I reprinted the gear and tried it out. I think I could make it work on the ABS frame, but still pretty tight. Works well on the PLA frame that was printed with the extrusion multiplier set at .9. I recommend this setting anyway, it makes the screw holes easier to use.by brotherchris - General
Very nice, thanks for making these changes. This should help out others. I'll get some printed and try them out.by brotherchris - General
Well it looks like the 608 bearing was off enough to cause the binding. I still think the lower extrusion multiplier helped as did the PLA frame. I think the gears fit well enough for me to continue. Thanks again for the help. Video update here:by brotherchris - General
I have made 2 of the most perfect PLA parts I have ever made. The worm gear and the D gear. It is still way to tight. I am now printing some with a 0.9 extrusion multiplier. I have also ordered some different 608 bearings...who knows. Pic: Video Gear Videoby brotherchris - General
I am currently trying to get the most perfect gear print I possibly can to see if that helps. I PLA frame didn't seem to help as much as I hoped. I am trying to tighten up the worm gear as evenly as possible, but I do get tighter parts than other as I roll the worm gear.by brotherchris - General
Well man, I am stumped, I have tried PLA PETG ABS, different motors. Different part configs, still can't get the D gear where it is lose enough to move on the worm gear when it is flipped over. Short of scaling down the parts a little, I am out of ideas. I'll keep thinking on it. There has to be something I'm doing wrong somewhere.by brotherchris - General
Finally, I got it to work, thank you.by brotherchris - General
The black is ABS, the silver is PLA. It shrinks just enough to be a problem. Also, I have no clue how to make these photos work correctly from google photos.by brotherchris - General
Good to hear, I am back tracking with a PLA frame, I should have it up and running today, fingers crossed everything should fit better.by brotherchris - General
Well I think ABS is the culprit. I just got a worm gear off the printer. It is 1mm smaller at its largest diameter than PETG/PLA gear. 34.22 mm for ABS 35.24 for PLA/PETG. Oh well, easy fix, just printing the D parts in ABS should solve the issue. I we get it fixed up and report back.by brotherchris - General
I have a hypothesis, I printed the frame out of ABS, it probably shrank. The gears are PLA/PETG. I had a PETG frame but I think I tossed it. So I can't compare. Any where close to your measurements? Any problems with the PLA frame getting to hot? This is 202 mm This is 192 mm This is from the center post to the D motor hole is 32 mmby brotherchris - General
Re-wrapping it is! It's where the worm gear meshes with the D gear. Its so tight the motor can't turn it. When you turn it with your fingers it's so tight it will lift the D gear. Did you print the D gear and worm gear in ABS by chance? The shrinkage of the ABS might give you just enough clearance to make it work..by brotherchris - General
I have been trying different things with the gear flipped over, but it is way to tight. I am not sure how you got it to fit in there. I am printing a new gear to see if that will make a difference.by brotherchris - General
So the D spool before I flip it, has the fishing line wrapped around it clockwise. When I flip it, should I re- wrap the line to make it run clockwise again, or should I just run the motor in the other direction? Thoughts? I think both would work, but I haven't tried either yet. My only concern would be the route the line would take to the rod ring would be different. Just a note, I did get the pby brotherchris - General
Oh damn! I didn't even notice. I will add that to the next video.by brotherchris - General
Just an update, I finally got my hang printer build video done. I go through the steps I took to get the printer up and going as fast as I can. I hope it helps others with building there printers. I am currently working on another one for calibration and setup. Chrisby brotherchris - General
Thanks for the info, I think the whole sharing gcode idea would be great, especially in the hang printer case. Even it you had to adjust filament settings they are very simple changes to a text file. I got the bluetooth working today so giant prints will be on there way soon.by brotherchris - General
Torb, How do you slice these huge models? What software do you use? Seems like every time I try to go really large Cura won't even try to slice it and Slic3r crashes my machine. Any tips? Thanks, Chrisby brotherchris - General
Hope you don't mind, but I made a video on my hang printer build. I am planning on having a how to video as well. Chris Chris's Hang printerby brotherchris - General
We did it!!! It prints!!! I set my measurement to the actual length of the fishing line which seemed to help some. I played with the start point a little to try and get it printing at the same height on the surface. I did a couple of G6 D0.2 to lower it enough then it took off. It has kind of a weird T shape going on, but I think it was caused by the print curling up and touching the print nozzleby brotherchris - General
Many more tests today. I am very close. I think all I need is a way to consistently/repeatedly set my nozzle height and a way to level the bed a bit easier. I moved my b and c to be a bit more perpendicular and raised my bed height to be the same as AB and C just to remove some variables. I'm getting there...by brotherchris - General
I made a time lapse montage of my failures, enjoy. Chris Hang failsby brotherchris - General
So the big problem was cm vs mm, after I explicitly told my self to convert it before I put it in the calc....oh well, corrected. I am happy to say the printer is printing correctly. Now the next question/issue. How to I compensate for bed level? It prints to high on one side and to low on the other. The printer is level while hanging on the celling, but I can't speak for the concrete floor I amby brotherchris - General
I just swapped it out with another one as well thinking the same thing, still has the same issue. Do my numbers look right to you? #define ANCHOR_A_X 0.00 #define ANCHOR_A_Y -343.70 #define ANCHOR_A_Z -146.40 #define ANCHOR_B_X 80.55 #define ANCHOR_B_Y 147.72 #define ANCHOR_B_Z -136.60 #define ANCHOR_C_X -115.42 #define ANCHOR_C_Y 175.04 #define ANCHOR_C_Z -126.80 #define ANCHOR_D_Z -29.50 Myby brotherchris - General
This is the video of the printer printing, not sure why it is doing this. Any clues? It's doing the same thing the other ramps was doing. This is the GCODE file you sent me. Hang test videoby brotherchris - General
Just an update, I have built another printer with ABS/PLA/PETG, my first attempt was all PETG and some parts didn't work so well. I have switched to 30 lbs test fishing line and found another RAMPS board to try. My first flight should be today, I will report back.by brotherchris - General
Already I can tell this file is working better, but the printer kinda prints in a U starts down, prints, then goes up prints, goes back down. It's almost like D is switch with another axis. Might still be bad RAMPS, I will see if I can locate another or find out whats wrong with this one. Thanks again.by brotherchris - General
I got the extruder going, not sure what I was doing wrong there, but I rewired the ramps and everything seems to be moving as it should now. When I start a print it start moving the D axis down about 100mm maybe, which in turn slacks the other axis, then it starts to swing back up, but by that time the other axis are tangled because of the extra slack. I am thinking it is either the Gcode or thby brotherchris - General
Ok, I have the fishing eyes on there now. I have re-measured and made the marlin adjustments from the calc. I get the printer to home dead center, then I turn it on, then I hit print. We the print start it goes crazy, the D motor starts running and take the printer up, some of the other motors move but not much. No extrusion, all the motors check out with the g6 commands, not sure what is going wby brotherchris - General