quaverf
Posts: 5
Joined: Thu Oct 24, 2013 10:31 pm

First Layer Settings with Raft

I have been experimenting with rafting a means of improving support adhesion to the bed (printing ABS, heated bed, Kapton tape). Very effective at improving part and support adhesion. While working through various settings under the First Printed Layer (Layer tab) and Raft Setting (Additions tab) I have observed what seems to be an unexpected relationship between these two groups of settings.

It was my understanding that First Printed Layer settings affected the first layer of the model itself, not the first layer of extruded material to touch the bed. This does not seem to be the case. If, for example, you raise the First Layer Width to say 150% the thick beads that make up the first layer of the raft become thick/bulbous. The first layer of the model, which would be the first layer printed after (above in Z) the last layer of the raft, is not affected at all.

I discovered this while trying to improve the solidity (all beads on first layer touching one another) of first layer of my model. When printing without a raft the best way to improve this is lowering the first layer height or increasing the first layer width. Neither of the settings appear to have any affect on the first layer of the model when printing on a raft.

My questions are 1) is this the intended functionality of the software? 2) if there a way to control the first layer of the model when printing on a raft?

Thanks,

Rick
JoeJ
Posts: 1435
Joined: Sun Feb 16, 2014 10:52 am

Re: First Layer Settings with Raft

Incorrect. First layer settings always affect the very first layer that is printed on the bed itself.
horst.w
Posts: 861
Joined: Fri Oct 17, 2014 5:00 pm

Re: First Layer Settings with Raft

To solve by using a second process >>> ADVANCED

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