I've been using a Titanium heatbreak (https://e3d-online.com/v6-titanium-heat-break-1-75mm) and a plated copper heatblock (https://e3d-online.com/v6-plated-copper-heater-block) with my old Prusa Mk2s for about a year with no problems (I don't have a Multi Material Unit). I bought these when my original heatbreak and block got destroyed, so I decided that if I have to buy a new part, I might as well upgrade them to enable higher temp printing, if I ever need that. I now have a new MK3 and I noticed that there are special part versions for the Prusa. My question is - before I sell my older MK2s, could I just swap the old plated copper heat block and titanium heatbreak from my MK2s with my standard MK3 parts? What is the difference between the Prusa-specific heatbreak and the standard e3d heatbreak? Would this affect MMU v2 compatibility (esp. the heatbreak)? The prusa-specific page (https://e3d-online.com/prusa-mk3-hotend-spares) specifies the heater block as v6, not as Prusa-specific. Does that mean the heater block that comes with the Prusa is 100% standard e3d part? Thanks!
The Prusa specific heatbreak is the same between the MK2 and the MK3 so yes you could just do a swap. The Prusa specific heatbreak has a slightly different internal geometry to the standard heatbreak. https://e3d-online.dozuki.com/Document/I2woGboCqjNEBkIx/V6.8-Heatbreak.pdf https://e3d-online.dozuki.com/Document/WKUGPLmiMEGdwuCD/PRUSA-BREAK-175-(Edition-1).pdf If you are planning on using the MMU2 then you should be using the Prusa specific heatbreak.