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hi, i have a bolt we will call it, with a threaded end which measures 9.3mm width ( outside diameter of threads), i have bored out a hole between 8.5mm to 9mm, and tapped it but the bolt is to loose in the 9mm hole and to tight in the 8.5 mm, how do i work out what size hole to bore before...

hi anyone know where i can get a list of best lathe speeds for various metals,ta.

hi im new to the forum and have a few enquiries, i am looking at buying a sieg co baby lathe for making mainly fishing floats out of balsa dowel and some small metal pieces, i have seen some unimat sl lathes for sale on ebay at around the same price but am a bit worried about buying a 50 year...