I am working on a project where I have to thread a 1 1/2" diameter hole in 1" thick maple. I drilled the hole using a 1 3/8" forstner bit on my drill press, soaked the hole with linseed oil and then used the hand die to thread the hole. Unfortunatley I must not have had the die perfectly perpendicular to the wood and I threaded the hole at an angle.

Before, I joint and glue up more boards, does anyone have advice for or against mounting the thread die in the drill press to ensure that the hole is threaded true?

Is there a risk I should know about?

It the speed of the drill press a problem?

Thanks

Doug