Not for long .......you are starting on the seemingly never ending tool acquisition path....Bob Avery has another convert - or whoever is your tool supplier of choiceprkaye said:Does one use the same countersink bit for #30 holes as for #40 holes? I think I only have the one countersink bit.
Jekyll said:I would recommend 3 microstop countersinks to trade $ for quality and time. Set one up for #30, 1 for #40 and use the 3rd for all other sizes. Why, you will save lots of time by not changing back and forth between 30 and 40 plus, you can set them once for the 30 and 40 and keep a nice exact countersink - no more low or high rivets.
Jekyll
Davepar said:It's theoretically possible to get by without some of the larger sizes. You just need to drill the hole small first, then countersink, then enlarge the hole. For example, say you need to countersink a #12 hole and only have a #30 countersink. First drill to #30, countersink the hole, and then drill to #12. The big drawback (besides the time lost screwing around) is that it's difficult to know when you've countersunk to the correct depth. You can't fit a #12 screw into the #30 hole to test it.
Dave