Through barrel coolant/lubricant reamers

[jfseaman]

I finished my through barrel flood system.

Practicing on an old 7mmRM barrel and a 28-Nosler reamer. This is a piloted reamer and when the pilot is fully into the rifling coolant flows to a trickle and does not wash chips out the breech.

Anyone use this type of system?

If so, do you see the same thing?

Do you have anything "special" done to the reamer?

Do you use a solid pilot reamer instead?

 

[Cigarcop]

Did you notch the bushing screw head so the fluid could flow thru the flutes?

 

[Rustystud]

I don't notch anything. I use a real pump, gearhead type, 3.6 gallons per minute, with a 125 psi relief bypass. I am running UltraProCut 10:1 with distilled water. I ream usually at 35 psi, I flush by backing the reamer out .100"-.250" chips clear every time.
Nat Lambeth

 

[Danny1788]

I use 4 gal of high sulfur Dark ridgid cutting oil and 1gal of ATF, I usually chamber at 30psi and I get oil coming out around the reamer while chambering and I do the same as Rustystud I back out about .200" and blow all the chips out super easy. I don't think that little pump has enough power to work.

I used a gear drive water pump that puts out about 40psi with the heavy cutting oil through my filters.

 

[Danny1788]

ON a side note are you chambering with a three jaw scroll chuck?

 

[jfseaman]

Like Kieth says, nut notches in the screw head. Also you can get reamers that take high flow bushings that have external grooves. Of course if you setup is good, you dont even need a bushing.

This is the what I needed.

I'm using a water soluble at ~10:1 RO water.

I use 4 gal of high sulfur Dark ridgid cutting oil and 1gal of ATF, I usually chamber at 30psi and I get oil coming out around the reamer while chambering and I do the same as Rustystud I back out about .200" and blow all the chips out super easy. I don't think that little pump has enough power to work.

I used a gear drive water pump that puts out about 40psi with the heavy cutting oil through my filters.

Beautiful setup. A bit beyond my more modest needs. If I were making my living chambering barrels, I would definitely go that route.

This system is borrowed from my mill.

 

[jfseaman]

Wow. That is a gorgeous. Old iron is so sexy.

BTW: The barrel in the picture is junk while I work out the nigglies. That reamer is going out to be resharpened with another to be reground as soon as I get all the details worked out.

I get what you are saying about cutting oil or oil+atf to thin it.

My world will be changing but to what I don't know.

 

[boltfluter]

Rigid Dark and 20% ATF is a great combination. The ATF helps to eliminate chips building up on the leading edge of the reamer. Seems as if it would also help if running a pressurized system.

Paul

www.boltfluting.com

 

[jfseaman]

Rigid Dark and 20% ATF is a great combination. The ATF helps to eliminate chips building up on the leading edge of the reamer. Seems as if it would also help if running a pressurized system.

Paul

www.boltfluting.com

If I can use it with my existing pump, I can give Ridgid Dar and ATF a try. I think that chip build up was causing me problems last night while working out the kinks. My lathe has fuses and I went through 10 popped fuses last night. The reamer would stop biting then catch too deep a cut. Rather than break something or burn up the motor controller, popped fuse. They are "special" and not carried locally and have to be Amazoned.

 

[boltfluter]

Forgot to mention that I used Ford ATF fluid for the best results.

Paul

 

[Intheshop]

Got to say,those are some nice,very professional looking pump/plumbing setups.

And thanks for the ATF - cutting fluid ideas.Maybe one of these days I'll get to chambering,we're "just" a small jobshop.Got the equipment,time on the other hand....

 

[Cigarcop]

Mine is mobile as well so I can use it on another machine...... I also did away with the small hose piece needed from the quick connect to the barrel.

 

[Rtheurer]

Can we see the connection to the barrel from you guys running a Flushing system?

 

[Shrek]

Alex , how deep is the coupling or in other words how much barrel does it need to attach ?

 

[Rtheurer]

 

[jfseaman]

I have to say that this is the exact information exchange I was looking for.

My system is baby steps. It was something that was described to me and I was given a list of part numbers from Tractor Supply.

With the contributions, I see many ways I can improve my system. I have a couple chambers to do where it should work fine. Then I will review.

1) It needs a cart so I can get it out of the way when I need to.
2) some rigid plumbing attached to the cart
3) Quick connects of some sort
4) Pressure gauge
5) Try Rigid Dark + Ford ATF as fluid.

If it can't maintain pressure on the Rigid+ATF a new pump will be in order. If that happens then filters as well.

 

[Shrek]

Have you seen any deflection from the weight of the fixture and hose hanging from the muzzle ?

 

[lloydx2]

If he is dialed in on the hole in the other end it doesn't matter.
Even without the coupler on its not going to run true anyway.

 

[Rustystud]

I use a Duff Norton Rotary coupler, with heater hose and hose clamps.
Nat Lambeth

 

[jfseaman]

Well I did a couple barrels with a fixed pilot reamer. 257 Roberts on new barrels. It flowed a lot more coolant. Cut like butter. Back off 1" every 0.100 to clear chips. "Powdered" metal cleared by it self.

Used a pecking style feed. I could cut 0.100 in about a minute. With time for chip clearing and head space checking ~1.5hours. Not speedy but fine. On of the rifles is complete and delivered. I'll get a shooting report soon. The other is mine. Still needs more work.

Very very happy with the results. FWIW: when I back the reamer out too far, coolant was shooting across the shop. If I wanted to clear the chamber of chips. Back the reamer out a little, power down the lathe and coolant pump. Remove the reamer all the way. Give the coolant pump a little goose with my hand to deflect the coolant into the catch tray. Check the head space. Rinse repeat.

I just sent a reamer out to Manson to be altered from a .585 bullet/neck to a .375. Once I confirm arrival, I'll give him a call to see what he recommends for coolant flow.

Next job will have coolant grooves of some sort into the screw/pilot/something to let a little more through.