- Joined
- Nov 10, 2011
- Messages
- 1,125
600 rpm should work fine for drilling holes less than 3/8" in high carbon steel. about the only reference I have found is for Uddeholm Arne or O1(http://www.uddeholm.com.br/br/files/arne_english_04.pdf) when using HSS bits, 50fpm if coated(gold)70fpm. 1/8" bits at 600rpm is about 20 fpm while 3/8" is 58fpm. again, this is with oil coolant. find a drill bit size chart (http://www.custompartnet.com/drill-size-chart) and go about 0.025" over when drilling pin holes in wood.
scott
scott