Diy rack mounted Leg extension hamstring curl v2 easy build

[@futbol1972]

This is nice but I wish I had some kind of back support while doing leg curls. My back gets sore after this do to no support in back eventhough I keep it nice and straight it stills stresses my back. I have 2 lower back buldging disk.

[@imNestii]

What is that thing holding the bearings?

[@AngusLogan]

They are called bearing mounts these ones are 16mm. Here’s and Amazon link amzn.to/3OpJRBz

[@volumeboyman]

They also go by "pillow block(s)"