update: rigid reamer holder

[Poor Shot 65]

The discussion that i replied to was concerning the Omni adjustable reamer holder by Drew's Precision (now being resold by Manson Reamers).

Omni Adjustable Rigid Reamer Holder | Drews Precision

drewsprecision.com

I have used the TBAS for a while now with no issues. I decided to go ahead and try out Drew's Omni Adjustable Spider Chuck Adapter - it wasn't a good experience. I will leave it at that.

Tooling | Drews Precision

drewsprecision.com

 

[LVLAaron]

Or maybe have a more reliable source make them. I won’t give PTG any business given their reputation for the past 10+ years.

I feel ya there. It'd be nice if there was a somma type holder with an MT shank

 

[Jud96]

I feel ya there. It'd be nice if there was a somma type holder with an MT shank

Just make an MT blank into a holder. It really wouldn’t be hard. Just grab the non taper part of the OD, dial it in, drill and bore it to size. If you were worried about it being dead on, drill, and bore underside and finish the bore with it in the tailstock and a boring head in the lathe chuck.

Pierce had a Kennametal DA collet floating holder with an MT shank. Not sure of the model number or if it was modified in anyway.

 

[DShortt]

Just make an MT shank. I did.

 

[Jud96]

Just make an MT shank. I did. View attachment 1739252

That also works

 

[DShortt]

That also works

And I ain't got no fancy stuff.

Just a will and a way.

 

[tobnpr]

Here's an interesting floater I picked up on Fleabay a few years back.
Made by the Burg Tool Company, it's got a 1" holder but I machined a 7/16" bushing/reducer for it.
It allows for float/flex via a hard rubber insert in which the toolholder is set. There's a spanner wrench "nut" that presumably compresses the rubber to make the float more/less rigid (?).

I've used it with a small Supreme chuck for second ops drilling, haven't yet had the balls to ream a chamber with it tho...

 

[jareese]

@Poor Shot 65

<I decided to go ahead and try out Drew's Omni Adjustable Spider Chuck Adapter - it wasn't a good experience. I will leave it at that.

Well that sucks... Sent you a DM

 

[Alex Wheeler]

When you hold a barrel only by the shank, you might want to consider balance. If you are indicating the end you are working on only, the other end will runout. You can dial in to zero, but at 1000 rpm cintrifical force becomes a concern. As a test, put your indicator in the breech end and push down on the muzzle end. Without an out board spider you will see movement. The outboard spider is not for jacking a barrel around to indicate, it for support.

 

[Poor Shot 65]

@Poor Shot 65

<I decided to go ahead and try out Drew's Omni Adjustable Spider Chuck Adapter - it wasn't a good experience. I will leave it at that.

Well that sucks... Sent you a DM

Sent you my number if you want to talk

Thanks