Posts: 4
Joined: Fri Sep 18, 2020 8:07 am

Is there an option to compensate for the increase in the first layer height?

Sun Nov 15, 2020 5:05 pm

I use these settings:
First layer height 120%
First layer WIdth 150%
Primary layer height 0.2mm

My first layer is 0.3mm so whenever I print something and measure the Z size axis I get an offset of 0.1mm
A 20x20x20mm box will be 20x20x20.1mm because of the first layer

Is there a way to compensate for the first layer in Simplify3d?

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Posts: 2283
Joined: Tue Mar 10, 2015 4:09 pm

Re: Is there an option to compensate for the increase in the first layer height?

Sun Nov 15, 2020 8:33 pm

So....if your first layer is printing thicker than you think it should be printing...and lets confirm that your first layer is printing 0.1mm thicker than it should, irrespective of what the setting for the first layer height is, then you need to lower the mechanical position of the nozzle in relation to the print bed.

This can be done the easy way....or the hard way.

The easy way is to adjust the Global-Z setting value in a negative direction. Note that the setting can go negative!! Adjust by a small amount and do a test print...then adjust in small steps until the layer is at the correct height.

The hard way depends on your printer and then method you use to level the bed. If manually, use a thinner piece of paper. If auto, refer to the manual.

And btw...the first layer height setting is to allow you to adjust the height of the first layer ....not to SET the first layer height And yes, there's a difference!

And a second btw...the First Layer Width setting in S3D is somewhat redundant. Adjusting it simply make both the extrusions and any gaps between them thinner or wider! Its only real use is to adjust the adhesion between raft and part when using a single layer raft.
Doug Kightley
Volunteer at the National Tramway Museum
Railway modeller and webmaster at

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