Very occasionally we need to have herringbone gears or pinions cut. These were a part of our product line which was discontinued in the mid 80's but we continue to supply repair parts. Whenever we receive a request for a replacement gear or pinion, the request is almost always for 1 pc. We do not have herringbone capacity and are not interested in adding it so we always contract our herringbone teeth. To reduce the cost per piece we process 3 - 5 pcs. It is usual for this low, but high investment $ quantity to be a 5+ year supply. We have been reading about gear cutting on machining centers and have determined our equipment is up to the task. Now we would like to try producing our own. Finding an involute profile end mill is proving to be an obstacle. One of the companies where we purchase our hobs is a source but the price they quoted is pretty significant. Should anyone know of a source for involute profile end mills we would greatly appreciate any suggestions you may wish to offer. Thanks, K.
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