Use this tool to cut out a recess in any 3d model for Velcro Command Strips. 

It includes 2mm extra length to allow for grabbing the tail if needed, as well as a .5mm chamfer. 

in your slicer, select the model, right click and choose add negative → load from file, and then orient the negative where you would like the strip to be. 

when you slice the part, there will be a recess where the negative was. 

you can also the right click on the model and choose “export as one stl” to have an stl file saved with the recess added.