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rmd6502

Small features not adhering on first layer

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Hi All,

I'm having a problem with smaller features of the first layer adhering properly - the skirt and outline of the object print fine, but the outline for a small hole in the center (2mm diameter) lifts right off and gets carried by the head to glob up on (and sometimes lift off) the next extrusion, which is usually the next layer of outline for the larger object.

I've tried releveling the bed, using the "official" plastic-coated paper Ultimaker leveling card, tightening until there's just friction on the paper, changing the first layer speed from its default of 15mm/s to 10 and 20.  Pretty sure I left the default PLA temperatures in the printer of bed 60, head 210.

Also scraped the old glue off the bed and reapplied new glue stick, to no avail.

I have a UM2Extended+, using Matterhackers' black PLA, and otherwise Cura's defaults.

The model I'm using is here, and I'll attach a link to the Openscad source once I upload it to GitHub.

Edit: Here's that link: House Numbers.scad

Edited by Guest

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I find that the glue stick works best if you dilute it a bit with water and wipe it across the glass in an even layer that will dry up to a very thin film when the heated bed kicks in. When the applied glue stick is not diluted it will stay thick and flexible, so for small parts it is not good. You should not see the glue, then you're good...

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