Milling SmallParts

railbuff · Jun 23, 2008

I need to mill a 0.003" high step off a piece of brass that is only 1/4" x 3/8" and only 0.049 thick at one end and 0.052" thick at the other end. Any suggestions as to how to hold it, apart from soldering it to a larger piece, then gripping it in the milling machine vice. Double sided carpet tape?

hexbasher · Jun 23, 2008

soft jaws would be the easiest.....machine a 0.052 deep pocket...and let it hit the jaws at the 0.049 step...thats what i would do...clamp lightly...use a torque wrench for repeatablity.....i sometimes use a 3M double sided tape thats around 0.006 thick (i forget exactly)...i've bent some small parts trying to remove them (which is really easy)

boslab · Jun 23, 2008

3m double side tape then dump in acetone or petrol or whatever solvents available for a couple of hours, should slip right off, i've gotten impatient and tried a hotplate to make things worse and ended up with burnt fingers and bent parts, joys of work i suppose
mark

MilGunsmith · Jun 23, 2008

How many parts?

If it is only one part, use a file or sandpaper. Dykem and then just take off the blue. Hold the part and put the file on the bench or sandpaper on a plate.

simplesteelcutter · Jun 23, 2008

If you have a small grinding vise, put it in that. Then you'll be able to put that in your milling vise. You'll have a better feel for how hard to squeeze it in a small vise.

Simplesteelcutter

gwilson · Jun 23, 2008

Clean all surfaces to be glued with acetone. Glue part down with superglue. Lightly heat to remove,soak in acetone for residue. I mill small parts by putting a piece of 1/4" steel in the vise. Take a little cut to make it level. Then,the 1/4" plate can easily be heated afterwards to remove the part.

2L N Die · Jun 24, 2008

Agree with gwilson on this one. I have done the same thing many times, works great. Sometimes tape is a b*tch to get off withput bending your part. Easier to get part level with the super glue than with the tape also.

Good Luck,
Michael

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Milling SmallParts

railbuff

Plastic

hexbasher

Cast Iron

boslab

Titanium

MilGunsmith

Stainless

simplesteelcutter

Plastic

gwilson

Diamond

2L N Die

Aluminum

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