Recommend boring bar inserts

[Kirk Amidon]

I just received the Jamieson system, and I'm super happy. I'd like to find adapters which will allow me to use the John Jordan tools I have, with it. It appears that Lyle only sells an adapter down to 1/2", while I have smaller tools. Will the Bosch adapters work? How finicky are they - to get down to 1/4 or 5/16, they need to nest. Are their other adapters available which can go from 3/4 down to 5/16 in a single step? I've just spent an hour or so digging into this, and can find evidence that others use the smaller tools with the Jamieson system, but I can't figure out what insert/adapters are being used.

My reasoning - I make a good number of smaller hollow forms, on the order of 3 -4" in size, and enjoy hollowing through a 1/2" with the 3/8" tools - I'd like to do these with the system, and take advantage of the laser for the wall thickness.

 

[Kevin Jenness]

McMaster Carr

You'll have to make your own holes/slots for the grub screws.

 

[Lyle Jamieson]

Hi Kirk,
You are in for a bunch of fun with the new system. I use the 1/2 bar with most small opening vessels. The hole in my boring bar is 3/8 and use other manufacturers 3/8 cutter assemblies in my bar. I dont use smaller boring bars because they can not reach out over the tool rest for the 3 or 4 inches you want without VIBRATION. I dont turn with vibration. Not fun, not safe, not easy. I believe the asthetics of a mouth opening a quarter inch larger will not affect the design desired.

 

[Darryn Achall]

I use these 3/8" taper tools in my Jamieson boring bar for small hollow forms. Taper tools
They can also be used in a handle for hollowing small forms. I believe Hunter tools also carries these same tools with shorter shanks which work well in a hollowing bar that accepts 3/8" cutter assembly.

 

[hughie]

I use small 6mm carbide cup tools, along with Oland type scraper tools and no particular system other than my own set up. I have a small hollowing rig that runs off the banjo, with a laser provision. Although the laser doesnt gets used unless its a closed style box.

 

[Kirk Amidon]

Thanks for all the info. @Darryn Achall - thanks for that tip - my 3/8" Jordan tools fit exactly as you suggested. That will be handy for small forms.

I just completed a small form about 5" wide and 4" tall primarily with the stock system, but used a bent 3/4" Jordan bar to reach the widest portion so as not to go larger than the 1" hole. Takes a lot of the stress and worry out of turning hollowforms when you can see the position of the tool tip.

Looks like I'll just need the half inch adapter, and maybe a teardrop scraper. Cheers!