Coil over "boring", Its not going good... Options

[Andyrew]

Soooo Lets just say that this thing is tough... It does not want to be sanded, grinded, or anything...

Sandpaper and a whatchamacall it just takes off the aluminum in like dust particles.

Grinding wheels are chunking up like no tomorrow... doesnt grind it off.. it eats it up.. like a tinsy bit at a time (IMG:http://www.914world.com/bbs2/html/emoticons/wacko.gif)

Anyone have any suggestions?

I'll take a pic of all the pieces i've tried...

[ArtechnikA]

QUOTE (Andyrew @ Mar 24 2005, 06:15 PM)

I dont think it can be lathed or machined... That would be a big bit...

i once toured a machine shop that made the hatchways into which submarine watertight compartment doors were fit. a single billet of stainless steel about 12' in diameter and about 3' thick.

that shop could machine a whole 914 from a single billet of steel on a 5-axis CNC machine. somehow, i think your flange can be machined because - that's how they made it in the first place, yes?

they'd chuck the flange part into the jaws and use a boring bar (basically, an internal cutter) to take it off.

or go get yourself a carbide cutting burr for your die grinder and BE CARFEUL. i used to get mine from the Snap-On truck but These Guys look to have pretty good deals. i wish i'd known about them when i still lived in NV !

oh - and think about the loads, especially in rebound. compressive loads at the ends of the dampers can be on the order of 3X your spring rate...