I have a Ti shaft which is currently 0.515 in in diameter (+/-.005) and 9.5 inches long. I need it turned down to 0.500 inches. Also, I need one edge cleaned up so its straight. One of them is fine, however one is slightly angled (just about .05 taken off)
Finally, I need a 1/4-20 thread 0.75 inches deep tapped on both sides of the shaft.
I'm not completely sure about the tolerance for the outside. It will have an object spinnig around it at about 7000 rpm which is mounted on ball bearings. I think it should be about +0/-.001 but I could be wrong.
If you need a blueprint I'll make one however this seems like a simple enough part.
OT. Has anyone ever used MFG.com for trying to get work to quote? I have a friend who has a shop and he is on hard times now. Work is sparse. I thought I would ask you guys.
For the most part I think that most of you guys are pretty knowledgable and know your stuff about prices etc. Any replys will be appreciated. Flaming is allowed but it will be graded.
I have tried it.
It was a waste of my time and money
In my opinion, the people that post jobs there have no intention of awarding the job. Thye are using your experience and labor to cost their jobs, and/or to take that info to the shops that ARE doing the work as leverage for a lower price.
I normally win about 40% of the jobs I quote. I know how to get work. Been doing this for years. I have never won a contract from MFG Quote and I have never won one here either. This is not saying anything neg at all about this site. But it does speak to the folks that post jobs on this type of site.
You want work? Go pound the streets. Go build solid relations with other shops. My shop is in a small town. There are I believe 4 shops with CNC in the entire county and very little industry, yet I am going to pay cash for a new Mori CNC 4 axis lathe in a couple months. We are thriving, because we have built some solid relationships with other companies.