RE: Last time I ever buy a Prusa
Also if printing with PETG, try to use a nickel plated copper nozzle since PETG does not stick to it like it does to brass.
Normal people believe that if it ain’t broke, don’t fix it. Engineers believe that if it ain’t broke, it doesn’t have enough features yet.
RE: Last time I ever buy a Prusa
Well credit to Prusa, parts ordered yesterday morning, and a 'shipped' email has arrived this morning, so hopefully the parts will get here during the week and I'll be back up and running next weekend. Managed to repair the thermistor, but will use it as a spare and fit the newly ordered one. Fingers crossed - and thanks for the support and patience and indulging my rather irritated mood at the time
RE: Last time I ever buy a Prusa
Given how fragile the thermistor wires are - I will add a connector if/when I have to replace it.
I already have the connectors, matching the ones E3D provides on there thermistors.
RE: Last time I ever buy a Prusa
[...] I already have the connectors, matching the ones E3D provides on there thermistors.
Having done a swap, I'm motivated to do the same thing. What connectors did you use?
and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan
RE: Last time I ever buy a Prusa
[...] I already have the connectors, matching the ones E3D provides on there thermistors.
Having done a swap, I'm motivated to do the same thing. What connectors did you use?
This is what I got. Molex MicroFit 3.0 I am confident in. Please let me know if the housing looks like it would match yours:
https://www.amazon.com/gp/product/B078PZY6SM/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1
And while you are looking, look at this crimper. I got it for other connectors, but it should work. Nicely built.
Sure beats the $400 Molex one.
https://www.amazon.com/gp/product/B019ARWWFY/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
RE: Last time I ever buy a Prusa
Well kudos to Prusa - I order Saturday morning from the UK, and I had the package in my hands this afternoon on my way home from work. Time to rebuild and learn the lesson! Thanks for indulging my rather bad mood everyone, and apologies.
RE: Last time I ever buy a Prusa
Well that was the end of that saga. Thanks to all for the advice. I replaced a few printed parts around the hotend, the thermistor, and whilst I was at it, replaced the nozzle and put a silicone sock on the heatblock. Also replaced the r/h y-axis bearing, and it's running like a dream now.
RE: Last time I ever buy a Prusa
Glad you're back in business. As you accumulate experience, it'll be easier to avoid problems. Have fun with it.
and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan
RE: Last time I ever buy a Prusa
- Always watch that 1st layer go down. The 3D printing gods are easily angered at any hint of arrogance and will punish offenders.
- The odds of something going wrong go up proportionally with the importance of the print, and inversely proportional to the time available.
It's been many, many moons since I've heard/read such truths as true as these. Very wise one, you are. 😌
RE: Last time I ever buy a Prusa
@apromain
Evidently my MKS3 arrived with bad thermostor. Been waiting over a week. How did you repair yours?
RE: Last time I ever buy a Prusa
The thermistor wire broke when I was extracting my hot end from the glob of melted plastic, so I had two ends of wire to play with. Stripped them back, solder them, and insulated them with heatshrink.
Hope that helps
RE: Last time I ever buy a Prusa
I strongly suggest a blob of glue where the thermister wires exit the heat block. You don't want any flexing at that point.
I use silica based muffler adhesive. Good to 1000 C.
RE: Last time I ever buy a Prusa
@robert-rmm200
Thanks!