Search found 224 matches

by slippyr4
Wed Jul 11, 2018 3:06 pm
Forum: Help requests / Purchasing assistance
Topic: Mini Rambo 1.3a + mk42 aluminum clone Firmware
Replies: 7
Views: 241

Re: Mini Rambo 1.3a + mk42 aluminum clone Firmware

If it's rubbing on the PTFE it's likely because the drive gear you're using isn't the same effective diameter as the one prusa use. IIRC tom's parts had a modified extruder body which offset the motor so that the filament path was correct when using a MK8 drive gear. On my clone I'm using an e3d hob...
by slippyr4
Thu Jun 21, 2018 4:24 pm
Forum: Help requests / Purchasing assistance
Topic: Mini Rambo 1.3a + mk42 aluminum clone Firmware
Replies: 7
Views: 241

Re: Mini Rambo 1.3a + mk42 aluminum clone Firmware

If you use prusa firmware it almost certainly won't work for the reasons you've stated- it won't be able to locate the calibvration points.

Marlin is about your only remaining option really, unless you get an FR4 clone of a MK42
by slippyr4
Wed Jun 20, 2018 9:05 pm
Forum: Help requests / Purchasing assistance
Topic: Mini Rambo 1.3a + mk42 aluminum clone Firmware
Replies: 7
Views: 241

Re: Mini Rambo 1.3a + mk42 aluminum clone Firmware

Do you mean marlin, or prusa firmware (which forked from marlin a long long time ago)?

Marlin will work just fine with an aluminium MK42 lookalike, but the prusa firmware will not calibrate with one. It looks like a MK42, but isn't.
by slippyr4
Sun Jun 10, 2018 6:05 pm
Forum: Help requests / Purchasing assistance
Topic: Stringing with black PETG on Prusa MK3
Replies: 4
Views: 376

Re: Stringing with black PETG on Prusa MK3

PETG is always a bit stringy. Try slightly lower temperatures; not too low or you’ll get poor inter-later bonding. Your test is a bit harsh though; a tiny island then a large travel brings out the absolute worst of stringing. On a real world print the results might be more acceptable. You can easily...
by slippyr4
Mon Mar 12, 2018 7:22 pm
Forum: Hardware
Topic: Smoking Mosfet
Replies: 5
Views: 447

Re: Smoking Mosfet

Depends on your mosfet whether it will cope. But you can limit the duty cycle in PID mode which will probably allow you to get away with it.
by slippyr4
Mon Mar 12, 2018 7:20 pm
Forum: Hardware
Topic: Ramps1.4 or Ramps1.5 or ramps 1.6???
Replies: 3
Views: 2247

Re: Ramps1.4 or Ramps1.5 or ramps 1.6???

Use an mks gen instead.
by slippyr4
Mon Mar 12, 2018 7:19 pm
Forum: Hardware
Topic: Did Thomas ever record the LCD-guide?
Replies: 4
Views: 382

Re: Did Thomas ever record the LCD-guide?

The reprapdiscount full graphic controller doesn’t connect to the SPI port on RAMPS, it uses software spi instead. Part of the reason why it’s so slow.

The SD card does use SPI but that really shouldn’t matter; you should be able to use it in conjunction with TMC2130 without a problem.
by slippyr4
Thu Mar 01, 2018 8:07 am
Forum: Software
Topic: Prusa firmware for RAMPS Prusa i3 clones with MK42 beds
Replies: 183
Views: 18405

Re: Prusa firmware for RAMPS Prusa i3 clones with MK42 beds

The graphic lcd won’t work in prusa fw. Too much code has been removed. There isn’t the code space left for it. As an aside, personally I don’t see the point. The software spi update cycle uses up a large percentage of cpu cycles leaving much greater risk of glitches and issues while printing. All y...
by slippyr4
Wed Feb 28, 2018 2:47 pm
Forum: Hardware
Topic: Using Einsy Rambo at 12V
Replies: 5
Views: 585

Re: Using Einsy Rambo at 12V

why not use it at 24v?
by slippyr4
Sun Feb 18, 2018 2:44 pm
Forum: Help requests / Purchasing assistance
Topic: Missing extrusion at the start of some layers
Replies: 3
Views: 329

Re: Missing extrusion at the start of some layers

This is probably a symptom of either temperature issues (possibly way too hot) or inappropriate retraction settings. What’s. happening, by the sound of it, is that after a travel move there is a small deficit of plastic in the nozzle, which causes underextrusion. What temperature / plastic and retra...