This adapter is for mounting an Ikea PS 2014 light onto anything with a standard UNC-20 1/4 inch thread. There was barely enough clearance for a bulb, I'll make a V2 with more clearance soon. I was able to fit my sengled smart bulb because it had a plastic housing and was able to bend a bit to get it in. (refer to pictures).
I added 15 solid bottom layers for added strength at the screw tap