Optimising print supports: Form 4/L and engineering resins

Update - adjusted Early Layer Exposure and Offset settings

I have been meaning to try this for a while, after @leonhart88 suggested it. It has taken me a while to find the time to do it, as well as building confidence that the stock exposure settings were definitely going to work without supports.

My setup is Tough 2000 V1.1 resin on a Form 4. I had no idea where to start other than the screenshot above, especially as this is for a different resin. However, the two main things I did were

  1. Add third row between 0.00mm offset and 0.50mm offset, at 0.10mm offset
  2. Tweak the Offset column value for the 0mm and 0.1mm rows. The default was a strange -0.007 or similarly insignificant value. I went to something like 0.3 (positive increase results in less elephant’s foot, which might seem counterintuitive) on the 0mm and a different value for 0.1mm.

You can see my new profile attached if you would like to try it yourself.

20251016_Tough2000V1-1_print_on_bed.fps (140.0 KB)

.fps File (Print Settings) Community Library . Compared to my previous effort using the stock setting, this has definitely made an improvement.

The “half” holes to prevent cups are one of the ways I can tell the bottom 0.5mm has improved. The cylinder is 6.5mm OD, for a scale reference. I had no issues with fit or clearance on the inner diameter (obviously I have some tolerance but I’m happy). The edges are square enough. Perhaps even a tiny bit chamfered. But I’m happy there’s no elephants foot and I have printed a quarter flex-plate of these and nothing failed.

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