Self Centering Lat Pulldown Leg Roller Adapter

Facing the prospect of having to buy a dedicated lat pulldown leg roller attachment made me angry, because I've already spent a ton of money on my power rack.  I took a look at my Keppi workout bench and saw an opportunity to take one of the leg rollers off and use that on my 2"x2" uprights, and modeled a self centering adapter to use with exisiting leg rollers the bench came with.  This adapter is meant for those of us who have 1" holes on our squat racks, and the conical shape means the leg roller will always self center on the post. 

This print is super quick.  You just want to use a strong plastic (I used PETG) and ONLY walls, since this part is weight bearing.