Simplify3D User Forum

I'm getting really nice prints with PETG filaments with the fan turned off, but TERRIBLE Bridging!

I have tried the fan set to 60% and this gives me slightly worse prints with much better Bridging.

And also fan set to off, but to "Bridge Fan Override" set to 100% in Simplify3D.....but this has the same effect as no fan, and the fan doesn't seem to commit to being on with this setting while printing bridging, just a short feeble pulse?

I'm assuming this is down to the "Unsupported Area Threshold" setting being some limit to the size of the bridge before the fan kick in.

But, I'm a little confused to why the setting is not just in mm rather then sq mm?

How can I set it up to actually ramp up the fans for even short (10mm) bridges.

Post your factory file and a picture of where you want the bridging to occur. Should be really easy to help you then.

And I have a feeling the bridging setting is in area (i.e. mm^2) because the actual length of each infill extrusion will change depending on the orientation. So the area is the only constant value you can use for the setting.

FFF attached, and here is where I'm having the bridging issue on the 3DBenchy torture-test. (attached the SLT too.)

This may or may not help.

On the OTHER tab, in the Bridging box, there is a setting called Extra Inflation Distance. This defines how much of the bridge is on "land". I discovered this while printing an XT part and notice some bridging completely missing and dibbling into the air. I never had this problem with PLA.

By default it is set to 0mm.

I have set all of my profiles to use 1mm. The more the merrier probably.

Sorry. I don't know how to resize the images.....



0mm


1mm


2mm