MK4 -> MK3S+ -> MK2.5S hand me downs. Possible?  

RE: MK4 -> MK3S+ -> MK2.5S hand me downs. Possible?

Bonjour, je prévois d’acheter le kit de mise à niveau MK4 pour mon MK3S; mais j’aimerais mettre à niveau mon MK2.5 S, j’ai beaucoup de pièces et je suis un bricoleur. Est-ce qu’un autre bricoleur l’a essayé?

RE:

I replaced the Mk2 rambo, 12 volt PSU and 12  volt Heater, heatbed and fans  with a new einsy, 24volt PSU, 24volt Mk52 heatbed, Mk3 Y axis 'Frog' and 5volt fans to make 'Frankenprusa'

Note Mk2 has 3 wire Pinda, Mk3 and Mk3S have 4 wire pinda, Mk3S+ has gone back to the 3 Wire set up, with Supapinda...
Also Mk3 has 4 wire filament  (Laser) sensor, Mk3S and Mk3S+ have three wire Infra red filament sensors. the Mk3S+ Filament sensor has a red PCB. you will need to select the correct firmware for your setup

the Z axis on the mk2 is a bit shorter than the Z axis on the mk3, so I printed different top and bottom brackets from thingiverse... 

they were originally designed to restore full Z height with a Volcano hot end.  

It was a long time ago, but this MIGHT be the files that i used    https://www.thingiverse.com/thing:2989361

you may have to re adjust the Mk2 frame width to fit the Y axis Frog...    I didn't and my Y axis squeaks a little....    it prints fine, so I haven't messed with it. 

Also beware that the Y axis motor is on the opposite side of the Belt, on the Mk2 frame so the Y axis motion will be reversed. , If I remember correctly, I simply reversed the pins in the motor connector
regards Joan

RE: MK4 -> MK3S+ -> MK2.5S hand me downs. Possible?

Merci Joann ! 

RE: MK4 -> MK3S+ -> MK2.5S hand me downs. Possible?

Hi Joan (and Francky)
I already knew I was going to replace the 12V power supply with a 24V supply ($106USD),  And buy a few other less expensive components.  I have that adapter for 3/4 lead PINDA as well as a handful of emergency backup PINDA/SuperPINDAs and an MK52 12V as well as a drawer full of Noctua and muffin fans.  My suspicion, after giving this a lot of thought, is to upgrade the MK2.5S to an MK4 instead of upgrading the MK3S+. And then take leftovers from that to upgrade the MK2.5S.
A recent development has made this an even more attractive idea:  A buddy cancelled his MK4 fully assembled in favor of a Bamboo printer, and when that shows up he's going to convert his MK3S+ to a Full Bear frame and give me his 'useless' MK3 parts.  So it seems to me the best option is to pull together whatever I need from his cast asides, whatever I need from my own MK2.5S, and the MK3s+ -> MK4 upgrade kit and convert THAT into the MK4, leaving the MK3S+/MMU2S alone.

You mention there's a bit of squeeking on your MK2 Frankenprinter.  I had that.  It turned out I was 4/10mm wider with my Y Axis than I should have been, and after about a year, I would score the Right hand (with two linear bearings) Steel Rod because of that mismatch.  I just got that corrected after... how many years has there been an MK2?  An error that only shows up every 10 months doesn't have a high priority to fix compared to pulling the scored rod out, replacing the bearings and "See you again in 10 months!"

RE: MK4 -> MK3S+ -> MK2.5S hand me downs. Possible?

I ended up buying a beat up "for parts" Mk3s printer, stripped it to the frame and PSU, and I'm going to put all the hand me downs into it.  About $150 for the junk printer.  Frame is good, PSU, is good, Rods are good.  Buying some new bearings.

RE: MK4 -> MK3S+ -> MK2.5S hand me downs. Possible?

I was using my Mk2 MMU1 last weekend... 

still works... 🙂
I was running Both Mmu1 and MMU3 at the same time... 
Nine rolls of filament on the shelf above the printers. 🙂
I also had a modestly basic Mk3 running as well

My Zaribo, needs a belt re fixing, one of the Z lift belts came adrift. 🙁

regards Joan