Show all posts by user
Safety...
Page 1 of 1 Pages: 1
Results 1 — 18 of 18
1) it doesn't sound like it's your voltage regulator if you can get the motors to move in one direction but not the other, that is almost always because the endstops are hooked up wrong OR your firmware settings for the end stops are wrong. In your configuration.h, you should have pullups enabled for the endstops, which leads to (2)
2) you may be experiencing just known bugs with marlin, or at
by
mjrice
-
Prusa i3 and variants
I print the parts for mine at 50% infill and 1.5mm walls (with a .5mm nozzle). With a .4mm nozzle, I'd suggest keeping the layer height around 0.2mm.
by
mjrice
-
General
Andrew - your photos are astoundingly good. Can I use them?
by
mjrice
-
Reprappers
Glad to see it's coming together - I wonder if you just connect the fan leads to +12V from your power supply, does it run ok then? The wire gauges sound ok to me.
by
mjrice
-
Reprappers
I use Permatex ultra-copper to set the thermistor and resistor in place, then wrap with kapton a couple turns. I've experimented with then putting a single turn of copper tape around the kapton and securing it at the seam with a drop of solder. Works pretty well and keeps the kapton from unpeeling.
by
mjrice
-
Safety & Best Practices
I like the 20 x 4-line Smart controller. It gives enough information for basic monitoring, access to most everything from the knob interface, and has an SD card slot built in.
by
mjrice
-
Reprappers
I can't wait to hear how the fishing line works out for you; it seems like the smartrap people have been moving away from that and back toward belts, but maybe your solution will work. For people using standard GT2, I've altered the design of the Y belt holder slightly to include a tensioner, and also just testing a new belt tensioner for the X axis that fits in the existing X end. I'll make a
by
mjrice
-
Reprappers
I've had problems like you describe a few times. Here are some things I would try:
1) Lower your nozzle even closer to the bed. Really squash that first layer onto the glass.
2) Up the extrusion temperature to about 195C. I've had some PLA that just won't lay down at lower temperatures but when you hit the right temperature all of a sudden it's golden.
3) Check that your idler has good tens
by
mjrice
-
General Mendel Topics
vegasloki, it sounds like you are saying that bearing guides are used for the default bearings, but my understanding is that they are only used if you print the idlers for 608 bearings.
by
mjrice
-
General Mendel Topics
Hi everybody,
Here is something I am playing with: Eliminating the M8 rods and nuts/washers and using monolithic ends for the Y axis on the i3 design.
I am going to be building an i3 with these soon and will update with photos. I would appreciate your feedback.
by
mjrice
-
General Mendel Topics
1) the bearings are parametric, meaning who prints the parts decides what bearing dimensions to use. I believe the default is 624 bearings (two of them for each idler)
2) It depends on which bearings your parts were designed for. The default uses no bearing guides, the belt just rides on the bearings.
by
mjrice
-
General Mendel Topics
Really nice looking job on the printer. Can you explain how you mounted the fan / what extruder model you are using?
by
mjrice
-
General Mendel Topics
I'm sorry if this pulls this thread off topic, but I don't understand why there is a single_plate set of files and then in box_frame I can set "i_am_box=0" and generate (what would seem to be) single plate parts. I would love to find an explanation of what's going on there. And thank you again, you've helped me a lot.
by
mjrice
-
General Mendel Topics
Oh! I didn't realize the X carriage was different between the single plate and box frames. Why's that? I thought the T-shaped carriage had been replaced by this rectangular-ish version with the bottom bearing offset to the side.
And, are there nuts on the other end of your JHead screws? Thank you so much for the response.
by
mjrice
-
General Mendel Topics
I'm unable to mount this ^ version of Greg's to the current 50mm X carriage. The Idler hinge screw and the hotend (JHead) mounting screws want to run into the X carriage, creating a non-flat interface. Am I doing it wrong?
by
mjrice
-
General Mendel Topics
I have occasionally solved a problem like this by manually extruding plastic into the void. I just run the extruder manually from pronterface, extruding about 10mm of filament at a time while I hold the piece under the hotend.
by
mjrice
-
General Mendel Topics
As an alternative, I tried printing the version of Greg's that is in the Prusa i3 "extras" folder, but that one doesn't work either because the stepper motor is too low and hits the carriage. Would someone please point me toward a known X-carriage and Greg's extruder combo that will play together?
by
mjrice
-
General Mendel Topics
Hello!
I am putting together an i3 and am printing the parts on my i2. I am not sure why, but when I try to piece together the extruder:
with the standard x carriage (three bearing version), it seems like the screw that holds the idler on (the hinged end at the bottom) wants to hit the x-carriage, which prevents the two pieces from fitting flush together. Am I doing something wrong? If th
by
mjrice
-
General Mendel Topics