In message , The Medway
Handyman writes
If you want two bits to really "pull in" then either drill a clearance
hole on the top one, or just self countersink *deep* into the top with
plenty of brute force and ignorance.

I've found that if the pieces don't pull together, backing out the Turbogold
& screwing it in again works a treat.

Don't try that with stainless....... they break!

regards



--
Tim Lamb