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Drilling holes in HSS

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appletree:
Hi Gents
I wondered if anyone has been successful in drilling HSS, I have a couple of U/S slitting saws I wish to cut up and make a specialist scraper for woodturning.
I have a couple of ideas Carbide or use EDM, wondered what you all thought
Phil

Manxmodder:
EDM would do it for sure. Otherwise you may consider grinding a hole with grinding points,but that will be very labourious .......OZ.

chipenter:
Wood a diamond jigsaw blade be worth a try ?

appletree:
Hi gents
Thanks for the involvement, cutting the outside profile is not an issue as I can cut a section out with one of those ultra tin angle grinder blades but a jig saw blade is another solution, then profile on the bench grinder. The hole is the issue as it wants to be @ 5mm, bigger and a diamond hole saw might be the answer, I think EDM is the best solution, but I have not got one Ihad thought about a grinding point, but you might need a few. Wondered if a carbide Christmas Tree rotary burr might work



Phil 

krv3000:
well you can unharden it then drill the hole then re harden

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