My problem is actually higher up. There is a shallow slot on the inside of the right wall that should have a support structure in it. In 5.3 and 5.4 it’s missing and replaced with a small loop that is in mid air. I expected that if the expansion was set to 0 it would be the same as 5.2 but it’s not. If I increase the expansions to 2mm I get printable supports for the loop and the nearby hole but anything less is unprintable. Even with a support , the loop is not actually doing anything. Rev 5.2 works well and I have gone back to it for day to day work.
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GregValiant 1,342
You might have run into the "Brim Bug".
If you have "Support Brim" enabled and you have "Build Plate Adhesion" set to "None" then the Support Brim isn't printed (Prime Tower brim isn't printed either).
There have been a couple of reports of that behavior on Github.
A fix is to enable the Skirt with a line count of 0.
You will get this
Instead of this
Without the Support Brim to rest on the support structure that is printed on Layer:2 is hanging in the breeze.
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LePaul 331
I'm seeing this too.
If you use a prime tower, no real brim is there. I've had 2 prints fail since the prime tower got knocked over. Using Ultimaker default profiles for UM Tough PLA and PVA support.
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