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Tin coated chamber reamers

How much of a benifit is having your reamer coated? Is a change in spindle speed needed? How much extra life (if any) is gained?

Thanks
Brock in AR
 
elginrunner said:
How much of a benifit is having your reamer coated? Is a change in spindle speed needed? How much extra life (if any) is gained?

Thanks
Brock in AR

Brook,

HSS steel is ca 65HRC
Tin coating is 90-95HRC with improed friction coefficient.

I do not think spindle speed comes into question when cutting a chamber?...

R.G.C
 
You will gain life but it's definite not necessary as some guys have cut hundreds of chambers with the same reamer. The TICN is a better coating if you're having one done. Never corrode & stays sharp. We use TICN on all of our cutters that I have made for our shop use & it extends the life considerably with reduced friction as previously stated. In our case we can run higher RPM's but you would probably need continous coolant for chambers.
 
I ordered a reamer 2 weeks ago from Dave at PTG and I asked about having it coated. He said if I wasn't going to do 50 barrels it is not needed.
Tarey
 

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