Added Micro Vertical adjustment to my Rigid Reamer holder.

[boltfluter]

But if his "boring bar" is perfectly aligned to the spindle..... and the barrel bore is perfectly aligned to the spindle..... then what?
I think we get a pretty good chance at making a really straight chamber.
I have CNC roots, so letting the machine do the tool holding comes naturally to me.
Pushers work great.
Sometimes I think it's more the artist than the paintbrush.

Johnny,

I agree, as I come from a CNC background as well. If everything is in perfect alignment the chamber will be perfect. I guess my point is everything has to be perfect every time. But everything has a tolerance, reamers, bores and even the machine due to just plain old operating temperatures. What we want, imho, is for the reamer to cut a nice chamber in a "stress free manner". Many ways to accomplish this task in the machining world. I personally know of several very talented smiths doing quite a bit of warranty work, replacing barrels with oversized chambers due to their rigid set-up holding the reamer. So, just be very mindful of the first few test chambers cut and don't sacrifice quality for convenience. Just remember, a reamer has no problem becoming a boring bar and that's not a good thing! At least not in my world! Lol.

Paul

 

[dustin_drews]

I’m 15 to 20 chambers in to this experiment. I have to say I absolutely love the system.
My chambers have zero run out front and back.
And the problem that started me down this rabbit hole was chatter and it completely went away.
One down side is speed. It takes a bit to get it dialed in… But it gets fast as have a few under my belt. Dual 10th indicators speed up the process.
Chambering goes fast once we start running the machine. People would freak out if they knew what rpm I chamber at now.
I need to get my carbinator pump hooked back up. The Haas pump is lacking flow to really push out the chips.
This was not my first solution. I tried a JGS floating reamer holder , a bison floating reamer and a Somma floating reamer holder. I could never get any consistency with not having chatter using them.
I found out using the haas I was not alone with this chatter issue.
If some one has it figured out to use a floating reamer holder and get zero chatter I’m all ears.

God Bless,

Dustin

 

[dustin_drews]

Johnny,

I agree, as I come from a CNC background as well. If everything is in perfect alignment the chamber will be perfect. I guess my point is everything has to be perfect every time. But everything has a tolerance, reamers, bores and even the machine due to just plain old operating temperatures. What we want, imho, is for the reamer to cut a nice chamber in a "stress free manner". Many ways to accomplish this task in the machining world. I personally know of several very talented smiths doing quite a bit of warranty work, replacing barrels with oversized chambers due to their rigid set-up holding the reamer. So, just be very mindful of the first few test chambers cut and don't sacrifice quality for convenience. Just remember, a reamer has no problem becoming a boring bar and that's not a good thing! At least not in my world! Lol.

Paul

You’re right Paul you can easily oversize chambers. But you can do it with about any type of reamer set up if your not careful. JSG reamers don’t float angularlly. If you don’t like them up the same thing can happen.
God Bless,
Dustin

 

[Jonnyofalltrades]

I’m 15 to 20 chambers in to this experiment. I have to say I absolutely love the system.
My chambers have zero run out front and back.
And the problem that started me down this rabbit hole was chatter and it completely went away.
One down side is speed. It takes a bit to get it dialed in… But it gets fast as have a few under my belt. Dual 10th indicators speed up the process.
Chambering goes fast once we start running the machine. People would freak out if they knew what rpm I chamber at now.
I need to get my carbinator pump hooked back up. The Haas pump is lacking flow to really push out the chips.
This was not my first solution. I tried a JGS floating reamer holder , a bison floating reamer and a Somma floating reamer holder. I could never get any consistency with not having chatter using them.
I found out using the haas I was not alone with this chatter issue.
If some one has it figured out to use a floating reamer holder and get zero chatter I’m all ears.

God Bless,

Dustin

Nice looking setup, very well done.
How much are you allowing for dial sag?