[Closed] What spare parts are good to have around for the MK3?  

Re: What spare parts are good to have around for the MK3?

For me, nozzles. Cheap Chinese ones on ebay or aliexpress are just fine. When I get a clog or partial clog, I will try and clear it with a cold pull once or twice. If that does not work. New nozzle. I just bought 25 .4mm nozzles for $20.

Next, print extruder parts as soon as you get your printer. I had a failure that damaged my printed extruder parts on my MK2. Had to buy a printed one on ebay. So, before you wind up with a blob/tumor, print these parts and have then on hand.

90-91% Isopropyl alcohol and acetone for cleaning the PEI bed. A 7mm socket wrench and 17mm spanner for changing nozzles. A nice set of needle nose pliers (but Prusa gives you these for free with your printer). An exacto knife set for trimming brims are strings from parts. A set of digital calipers for measuring filament consistency and calibration parts once you have printed some.

Thats all I can think of right now...

Re: What spare parts are good to have around for the MK3?

Thanks for the reply, fortunately I already have everything listed except of the extruder parts. I’ve read that the MK3 uses PETG for everything except for the extruder assembly which is printed in ABS. Do you think it's going to be an issue if I print my extruder replacements from PETG instead?

Re: What spare parts are good to have around for the MK3?

For me, nozzles. Cheap Chinese ones on ebay or aliexpress are just fine. When I get a clog or partial clog, I will try and clear it with a cold pull once or twice. If that does not work. New nozzle. I just bought 25 .4mm nozzles for $20.

Next, print extruder parts as soon as you get your printer. I had a failure that damaged my printed extruder parts on my MK2. Had to buy a printed one on ebay. So, before you wind up with a blob/tumor, print these parts and have then on hand.

90-91% Isopropyl alcohol and acetone for cleaning the PEI bed. A 7mm socket wrench and 17mm spanner for changing nozzles. A nice set of needle nose pliers (but Prusa gives you these for free with your printer). An exacto knife set for trimming brims are strings from parts. A set of digital calipers for measuring filament consistency and calibration parts once you have printed some.

Thats all I can think of right now...

Totally agree. Having everything before you have a problem is key to keeping a happy printer owner. Having two works as well.

Re: What spare parts are good to have around for the MK3?

What I never see mentioned is a pad of paper and a pencil. Better yet keep a notebook for each printer, filament manufacturer, and slicer. And a camera. When you post here with a problem, and you probably will, nine times out of ten the first response is "Pictures?" If you have a phone camera that is usually good enough.

Neal

Re: What spare parts are good to have around for the MK3?

Hi, You mean all these?

extruder-body
extruder-cover
extruder-idler
extruder-idler-plug
filament-sensor-cover

Got any link for correct aliexpress nozzles?

Re: What spare parts are good to have around for the MK3?

Hi, You mean all these?

extruder-body
extruder-cover
extruder-idler
extruder-idler-plug
filament-sensor-cover

Got any link for correct aliexpress nozzles?

Yes, exactly... I bought nozzles on ebay, but these look just as good.

https://www.aliexpress.com/item/Special-offer-2Pcs-E3DV6-Copper-mouth-Nozzle-printhead-Aperture-of-1-75-0-4mm-3D-printer/32465048756.html?spm=2114.search0104.3.1.47f1687bsNAFCz&ws_ab_test=searchweb0_0,searchweb201602_1_10065_10344_10130_10068_10324_10547_10342_10325_10546_10343_10340_10548_10341_10545_10084_10083_10618_10307_10313_10059_10534_100031_10103_441_10624_442_10623_10622_10621_10620_10142,searchweb201603_40,ppcSwitch_5&algo_expid=d783fa7f-b495-41cb-9fe9-0471410c1290-0&algo_pvid=d783fa7f-b495-41cb-9fe9-0471410c1290&transAbTest=ae803_4&priceBeautifyAB=0

Re: What spare parts are good to have around for the MK3?

Apparently a PSU. Mine failed and it seems like it is not all that uncommon.

Re: What spare parts are good to have around for the MK3?

Both fans... Not so much because they might fail, but because they are exposed to external solid objects, like forceps when you go to pluck a blob off the bed. Nothing quite like the sound of a 7 blade fan running with only 6 blades.

Re: What spare parts are good to have around for the MK3?

Both fans... Not so much because they might fail, but because they are exposed to external solid objects, like forceps when you go to pluck a blob off the bed. Nothing quite like the sound of a 7 blade fan running with only 6 blades.

Where can you get a replacement blower for the Mk3? I can't find any with a speed sensor and the bearings are failing in mine.

Re: What spare parts are good to have around for the MK3?

I'd go with the list below for parts:

1. Nozzles
2. Extruder parts
3. PSU
3. linear Bearings

anybody know the prices of OEM PSU from prusa and any good source for alternatives?

Re: What spare parts are good to have around for the MK3?

You don't need a spare PSU. If yours breaks, just contact prusa support and they'll send you a working one.

Re: What spare parts are good to have around for the MK3?

What about the PTFE tubing, where are you Canucks getting this stuff for the extruder?
Cheers,
Jon

Re: What spare parts are good to have around for the MK3?

Jon, I purchase my parts and some filament from https://spool3d.ca/ . I see https://www.voxelfactory.com/ (look under 3D Printing Solutions) is now carrying some parts. i bought my printer and some filament from Voxel Factory.

Although they don't have parts, I thought I would mention https://filaments.ca/ as I buy most of my filament from them (large selection) and they now have quality 1 kg PLA filament rolls for $15.95, a real bargain.

Re: What spare parts are good to have around for the MK3?

Thanks Michael!
I looked on spool 3D and did not see any, though they need a search function!
I will check the other.
Cheers,
Jon

Re: What spare parts are good to have around for the MK3?

Thanks for the reply, fortunately I already have everything listed except of the extruder parts. I’ve read that the MK3 uses PETG for everything except for the extruder assembly which is printed in ABS. Do you think it's going to be an issue if I print my extruder replacements from PETG instead?

I've been wondering the same thing. I've printed with PLA and PETG so far, and don't think my setup is conducive to using ABS (printing in a rather cold garage, with no enclosure). My extruder parts already melted a little (when dealing with a particularly uncooperative clog early on), but not in a way that damaged functionality.
Should I print emergency replacement parts for the extruder components in PETG, or would PETG be useless for that? Is it worth trying to print ABS for it (without drastically modifying my printer's setup)?

Re: What spare parts are good to have around for the MK3?

I've been wondering the same thing. I've printed with PLA and PETG so far, and don't think my setup is conducive to using ABS (printing in a rather cold garage, with no enclosure). My extruder parts already melted a little (when dealing with a particularly uncooperative clog early on), but not in a way that damaged functionality.
Should I print emergency replacement parts for the extruder components in PETG, or would PETG be useless for that? Is it worth trying to print ABS for it (without drastically modifying my printer's setup)?

Well worth having spare printed parts if you are only operating a single printer. Re extruder and PETG, that is what Prusa use now on all printers for the extruder and all other parts. The only part left in ABS is the print fan shroud.

Re: What spare parts are good to have around for the MK3?

Is this the right size PTFE tubing in the hotend?
3mmOD and 2MM ID
https://www.amazon.ca/Tiptiper-Printer-Components-ID-2MM-Consumable/dp/B077PFGZVL/ref=sr_1_4?ie=UTF8&qid=1522630688&sr=8-4&keywords=ptfe+tube+1.75mm&dpID=41fVcg7%252BZ9L&preST=_SY300_QL70_&dpSrc=srch
Cheers,
Jon

Re: What spare parts are good to have around for the MK3?

Jon, That is the correct size PFTE tube. It is shipped from China and can take a while to arrive but if you need it now here is the one I bought from SPOOL3D https://spool3d.ca/ptfe-teflon-tube/

Re: What spare parts are good to have around for the MK3?

Thanks Michael!
Cheers,
Jon