I edited a model (entirely in Orcaslicer) to add Gridfinity mounting. The default model is the same size as the original model and the other model is for Loctite/Multicore solder (my she rest in peace).

For Multicore solder, scale up the “sides” part by 5% uniformly.

I tested this model on a Bambu A1 with PLA and it printed well. I used tree supports for the solder guide and set it to be on baseplate only. You might want to add manual supports so you don't get supports on the Gridfinity part as they shouldn't be necessary.