Anyone here that has made broaches? I need to make a steel part that needs an odd shaped through hole that is about 2 1/2 inches deep. I have looked at many online videos, and I think I can make the broach without too much hassle. My question is about the depth of the hole. All of the search results I have looked at were broaching a hole in flat plate material that looked to be about 1/4" thick. Any down side to a much thicker material (2 1/2") other than lots more tool pressure since more teeth will be cutting at once. Any thing that needs to be different about the broach? I think EDM would be the best here, but thought I might give it a shot.
Thanks
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