Search found 176 matches

by chumm
Fri Dec 22, 2017 8:00 pm
Forum: Help requests / Purchasing assistance
Topic: Wiring the MK2a to direct 12V PowerSupply ??
Replies: 10
Views: 2970

Re: Wiring the MK2a to direct 12V PowerSupply ??

You can get the other parts cheaper, but the PID controller seems like it should do the trick just fine. The only potential annoyance I see with that model is it seems to use a mechanical relay, which will make a clicking noise every time it turns on the heated bed to maintain temperature, though I'...
by chumm
Thu Dec 21, 2017 8:22 pm
Forum: Hardware
Topic: Divide or not divide Proximity Sensor
Replies: 4
Views: 3787

Re: Divide or not divide Proximity Sensor

Weighing in with a simple solution here, though I'll admit I'm not 100% on the electronics understanding. Using a LJ18A3-8-Z/BX NPN sensor on a MKS Gen 1.4 with 24v power, I connect brown and blue to the 24v aux input on the board, then connect black only to the signal pin of the Z min endstop conne...
by chumm
Thu Dec 21, 2017 3:58 am
Forum: Hardware
Topic: shaft for lm12uu linear bearing
Replies: 1
Views: 942

Re: shaft for lm12uu linear bearing

202 stainless is pretty hard, but over time the balls in the LM12UU bearings will probably start to wear a groove into it. That is why we typically use hardened rods. You can use bushings instead of ball bearings to prevent this, but again hardened rods are polished so they don't cause much wear on ...
by chumm
Thu Dec 21, 2017 3:42 am
Forum: Help requests / Purchasing assistance
Topic: Wiring the MK2a to direct 12V PowerSupply ??
Replies: 10
Views: 2970

Re: Wiring the MK2a to direct 12V PowerSupply ??

24v would be nice to supply the heated bed, but that temperature controller takes a 12v input. You could potentially power it from something else in your setup that is running on 12v and just run the heated bed from the 24v PSU, otherwise you can stick with your 12v. The wiring is a little weird, bu...
by chumm
Wed Dec 20, 2017 6:17 pm
Forum: Hardware
Topic: Z-motor problem
Replies: 12
Views: 4410

Re: Z-motor problem

You said wiring in series didn't work based on those diagrams. I'm not as electrically inclined to just go off the circuit diagram, but this adapter is what I have successfully used to wire Z in series on multiple MKS-Gen 1.4 boards: https://www.instructables.com/id/Wiring-Your-Z-Stepper-Motors-in-S...
by chumm
Mon Dec 18, 2017 11:28 pm
Forum: Help requests / Purchasing assistance
Topic: Tevo Delta wont calibrate
Replies: 4
Views: 1530

Re: Tevo Delta wont calibrate

I don't know much about this printer, but looking at a video of the normal calibration it seems that after it probes the points it moves straight up, then comes down to probe again. The motion on your printer is consistent with that, except the right rail is failing to move, so the back and left rai...
by chumm
Sun Dec 17, 2017 9:57 pm
Forum: Help requests / Purchasing assistance
Topic: Dolly Part List Help
Replies: 6
Views: 1597

Re: Dolly Part List Help

Yeah the links are to search pages because Aliexpress prices and listings are pretty volatile. You can save some hassle by getting an electronics kit, here's one that has boards, endstops, motor drivers, LCD, and heated bed: https://www.aliexpress.com/item/Reprap-Ramps-1-4-Kit-With-Mega-2560-r3-Heat...
by chumm
Sun Dec 17, 2017 11:22 am
Forum: Help requests / Purchasing assistance
Topic: Tevo Delta wont calibrate
Replies: 4
Views: 1530

Re: Tevo Delta wont calibrate

Fixed video link here: fp2NQUxMAWw One thing to try is to reduce the speed of the printer while leveling. I had a similar problem with another printer where during auto bed leveling it would jerk unpredictably and then crash and reset. It did not look exactly like this, but the problem ended up bein...
by chumm
Tue Dec 05, 2017 9:05 pm
Forum: Help requests / Purchasing assistance
Topic: Parts suggestions
Replies: 22
Views: 5586

Re: Parts suggestions

What thermal fuses are you using that can handle 20A+? https://www.amazon.com/gp/product/B00JR5ED7U/ Mine are only 10A, but the bed heats up so quickly it only needs to stand up to a minute max of sustained current. I'm using a 20A PSU, I guess if one were using something larger it might draw too m...
by chumm
Sun Dec 03, 2017 3:28 am
Forum: Software
Topic: Slicing Velociraptor_Business_Card with Simplify3D, strange behavior
Replies: 4
Views: 1795

Re: Slicing Velociraptor_Business_Card with Simplify3D, strange behavior

I don't have S3D to try this on that file, but there's an option, Mesh > Separate Connected Surfaces that often fixes broken slices like this. I think it happens when the solid you're using isn't one proper piece but is multiple solids intersecting with another, which those connector lines might be ...