Always raft-printing?


#1

Hi!

Unboxed and installed my M300 for a few days ago but had to leave for a short vacation and will return back home tomorrow for my first print! :slight_smile:

Is a raft always needed when printing with the M300 or is it possible to print directly into the bed? How’s the surface look after the print? Atm I have to print 100 spinners and both sides needs to be smooth and nice… I’ve printed the first ones on PEI which leaves a nice surface but I’m curious regarding the surface finish of the surface that is printed downwards?


#2

Pssst, Marcin.... *Whispers in ear*; "raftless".


#3

I think it's pretty clear that there will be no official raftless option for the m200/m300 (and most probably also the Inventure) in their current versions.

Even if Zortrax would offer a flat aluminium bed, there would be the problem of adhesion. I.e. you couldn't add any kind of sheet on the bed as it would invalidate the (resistance based) initial distance measurement.

Besides, there would be an offset needed in addition to the raftless option. Plus most probably a first layer extrusion multiplier. And still materials like ABS would tend to unstick.

This kinda contradicts Zortrax' philosophy and IMHO won't happen. Even for the future (next revision of m200 etc.) it seems somewhat unlikely that Zortrax will abandon their patented resistance based level measurement.

Anyway, there are unofficial solutions and I guess that's the only way to go for the foreseeable future.


#4

I think it's pretty clear that there will be no official raftless option for the m200/m300 (and most probably also the Inventure) in their current versions.

Even if Zortrax would offer a flat aluminium bed, there would be the problem of adhesion. I.e. you couldn't add any kind of sheet on the bed as it would invalidate the (resistance based) initial distance measurement.

Besides, there would be an offset needed in addition to the raftless option. Plus most probably a first layer extrusion multiplier. And still materials like ABS would tend to unstick.

This kinda contradicts Zortrax' philosophy and IMHO won't happen. Even for the future (next revision of m200 etc.) it seems somewhat unlikely that Zortrax will abandon their patented resistance based level measurement.

Anyway, there are unofficial solutions and I guess that's the only way to go for the foreseeable future.

Although with a PEI sheet with cutouts for the metal plates and then a Z offset it should be fine, So no way to turn off raft in Z-Suite? Interesting :D

Just started my first M300 print! yay!

So if I have an electronic case the bottom and top of the final product will be all rough from the raft?

 


#5

IMHO Z-Suite will not allow to disable the raft in the foreseeable future. The option always existed internally and there are external options of course.

About the PEI sheet: I would assume that even a 0.03mm sheet makes a difference (regarding 1st layer distance) taking into account that this is (about) a third of the layer height for the finest ABS resolution.

Besides, I would be surprised if the edge between PEI and no PEI wouldn't be visible on the bottom surface. And well, the metal areas are rather large, so >90% of smallish centered prints would be outside the PEI sheet.


#6

IMHO Z-Suite will not allow to disable the raft in the foreseeable future. The option always existed internally and there are external options of course.

About the PEI sheet: I would assume that even a 0.03mm sheet makes a difference (regarding 1st layer distance) taking into account that this is (about) a third of the layer height for the finest ABS resolution.

Besides, I would be surprised if the edge between PEI and no PEI wouldn't be visible on the bottom surface. And well, the metal areas are rather large, so >90% of smallish centered prints would be outside the PEI sheet.

Downloaded ZTool, needed to be able to use a lower infill grade in a project, I can see that I can remove the raft from there, but after 4-5 prints now I kind of start to get used to the raft, the print comes loose pretty easy… maybe its not a bad idea after all!