pic: prototype drivetrain v2.1

[548swimmer]

Originally Posted by AdamHeard

Reaming doesn't really take much longer than drilling, I don't see any reason not to do it.

Remembering. Many of the build team members are so used to working in our school's "shop" where we have no reamers, that when we are in a real shop, we just go straight for the drill bits because we're used to them. If we remember to ream, there is no reason for us not to.

[AdamHeard]

Originally Posted by 548swimmer

Remembering. Many of the build team members are so used to working in our school's "shop" where we have no reamers, that when we are in a real shop, we just go straight for the drill bits because we're used to them. If we remember to ream, there is no reason for us not to.

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.

[548swimmer]

Originally Posted by AdamHeard

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 .

[JamesCH95]

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!