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-   -   pic: prototype drivetrain v2.1 (http://www.chiefdelphi.com/forums/showthread.php?t=85737)

548swimmer 10-05-2010 19:08

Re: pic: prototype drivetrain v2.1
 
Quote:

Originally Posted by AdamHeard (Post 961444)
We work in our school's shop as well, and purchased the few sizes of reamers we routinely use; they were inexpensive and well worth it.

Alright, I'll talk to our... I'm not really sure who would make that decision...

I'll figure that out at our next meeting, along with the answer :D.

JamesCH95 11-05-2010 09:05

Re: pic: prototype drivetrain v2.1
 
Drill bits are great for clearing material out and for making holes where fasteners can pass through, but a drill bit will never come close to surface finish or precision of a reamer. Say you're making the bearing for a 1/2" axle, I would drill with a 0.4921 jobber bit then ream to 0.5010, a HSS reamer in that size is $21 from McMaster and has a tolerance of +/- 0.0003" an impractical tolerance for drilling or boring, but anyone can do it with a reamer.

Best of luck!


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