NewGunPlumber
Aluminum
- Joined
- Dec 18, 2019
Hi all,
Getting very close to having everything ready to cut my first chamber. This will be set up through the headstock with inboard and outboard spiders, chamber flush system running around 45psi and 1gal / min of ridgid dark cutting fluid flow with adjustment on both pressure and flow, have the ability to stop fluid and do high pressure air flush as needed. Have piloted reamers, reamer stop and PTG floating reamer holder to be held in the tailstock.
Haven't decided 100% if I'll pre drill then parallel or taper bore. Makes sense just depends on if I get frustrated setting up the compound to correct angle etc!
So keeping the above in mind I'm reasonably confident with the turning and threading part of the process BUT I've never had another job that has required using a reamer in a similar way so looking for some advice. My main questions or concerns are around plunging the reamer
Speeds. Everyone seems to have a different theory but sounds like around 100-150 with front flush and reasonably ridgid setup is going to be close and manageable starting point?
Stopping and restarting. Again read some different opinions on this. My concerns with running a floating reamer holder is if I withdraw or plunge the reamer into / out of contact while the barrel is turning there is enough movement in the reamer holder for the reamer to grab and bounce around inside that clearance damaging the chamber. The other theory seems to be maintain pressure on the reamer so that it has full contact until the barrel has stopped turning. To me one has the potential to damage the chamber and one has the potential to damage the reamer. What's everyone's thoughts?
Depth of cut. Having front flush SHOULD be clearing chips. The more the reamer is removed and reinserted the more potential there is for problem as per point 2. For those using similar setups what do you find works? First chamber will be a 308 and I know different diameter and length reamers will all effect this but some guidelines would be good.
Getting very close to having everything ready to cut my first chamber. This will be set up through the headstock with inboard and outboard spiders, chamber flush system running around 45psi and 1gal / min of ridgid dark cutting fluid flow with adjustment on both pressure and flow, have the ability to stop fluid and do high pressure air flush as needed. Have piloted reamers, reamer stop and PTG floating reamer holder to be held in the tailstock.
Haven't decided 100% if I'll pre drill then parallel or taper bore. Makes sense just depends on if I get frustrated setting up the compound to correct angle etc!
So keeping the above in mind I'm reasonably confident with the turning and threading part of the process BUT I've never had another job that has required using a reamer in a similar way so looking for some advice. My main questions or concerns are around plunging the reamer
Speeds. Everyone seems to have a different theory but sounds like around 100-150 with front flush and reasonably ridgid setup is going to be close and manageable starting point?
Stopping and restarting. Again read some different opinions on this. My concerns with running a floating reamer holder is if I withdraw or plunge the reamer into / out of contact while the barrel is turning there is enough movement in the reamer holder for the reamer to grab and bounce around inside that clearance damaging the chamber. The other theory seems to be maintain pressure on the reamer so that it has full contact until the barrel has stopped turning. To me one has the potential to damage the chamber and one has the potential to damage the reamer. What's everyone's thoughts?
Depth of cut. Having front flush SHOULD be clearing chips. The more the reamer is removed and reinserted the more potential there is for problem as per point 2. For those using similar setups what do you find works? First chamber will be a 308 and I know different diameter and length reamers will all effect this but some guidelines would be good.