micro reaming 718

[motor-vater]

If you had to ream a 1.55 mm hole in inconel 718, what kinda reamer would you go with. Carbide, HSS, some other cool thing I've never heard of????  and its over an inch deep YIKES!!!

[AMCNitro]

HHS reamer.  Carbide is too brittle for Inconel IMO. You will have to replace them often though

[motor-vater]

Kinda what I thought too, but we are gonna try to have them EDM drilled and see how it goes, cost of drills alone and life of tool played a role in the decision making process. Our filters dont have a small enough micron mesh and our coolant is to dam dirty. We were clogging the coolant holes in the drill after only a few parts which was leading to failure.... ERRR!!! Dont really want to go through all the work involved in setting the machine up to handle this.. Funny I always said why cant I get the easy ones like drilling a whole in something, Careful what you wish for!!!!!

[AMCNitro]

21 hours ago, motor-vater said:

Kinda what I thought too, but we are gonna try to have them EDM drilled and see how it goes, cost of drills alone and life of tool played a role in the decision making process. Our filters dont have a small enough micron mesh and our coolant is to dam dirty. We were clogging the coolant holes in the drill after only a few parts which was leading to failure.... ERRR!!! Dont really want to go through all the work involved in setting the machine up to handle this.. Funny I always said why cant I get the easy ones like drilling a whole in something, Careful what you wish for!!!!!

In something....other than inconnel