GRIZZLY T10667 (01) PDF MANUAL

GRIZZLY T10667 (01) PDF SUMMARY:

What is the purpose of the Bald Eagle Floating Reamer Holder Kit?

The T10667/T10668 Bald Eagle Floating Reamer Holder Kit provides excellent accuracy and control when chambering gun barrels. The holder compensates for a small amount of misalignment between the chuck and tailstock, allowing the reamer enough free movement to remain aligned with the bore. This type of holder permits the user to control the reaming process and release the reamer from action, preventing damage that can occur to a barrel when reamers bind.

What is the floating reamer holder designed to complement?

This floating reamer holder is designed to complement a precise setup—not make up for an inaccurate one.

What is a critical factor to consider before using the floating reamer holder?

Before attempting to use the floating reamer holder, it is critical that every component used in your setup is adjusted as accurately as possible. Additionally, alignment adjustments should be indicated off the bore—not the outside of the barrel.

What should users do to gain proficiency with a floating reamer?

Because a floating reamer is not rigidly restrained like other methods of reamer control, it takes experience through repetition to use it proficiently. Before working with an expensive barrel, we highly recommend practicing on a scrap barrel until you are familiar with the feel and technique of using a floating reamer.

What is the recommended use for the floating reamer holder?

This reamer holder is only designed for use with reamers that have properly fit bore bushings or solid piloted reamers that have the pilot bushing fitted to the bore.

What is recommended before completing the reaming process?

We recommend pre-boring the chamber a little undersize and using a roughing and/or a finishing reamer to complete the process.

What are the steps to using the floating reamer holder when chambering a gun barrel?

• Set up the barrel in your lathe, per your normal method, centering the bore of the barrel as accurately as possible.
• Assemble the reamer (not included) and holder by inserting the reamer shank into the holder and tightening the set screws against the reamer flats with a 3mm hex wrench.
• Insert the round-nose dead center into your tailstock.
• Apply an ample amount of cutting oil inside the barrel and on the cutting end of the reamer.
• Carefully insert the reamer bushing into the bore while supporting the reamer holder in your hand, so the bushing does not bind.
• Move the tailstock forward until the rounded end of the dead center begins to enter the reamer holder.
• Turn the lathe ON and slowly apply pressure, using the tailstock quill handwheel (after tailstock has been locked onto the bed).
• Feed the reamer into the barrel bore and make cuts in short increments, stopping frequently to remove chips from inside the flutes.
• Remove the reamer every 0.020" to 0.050" and clean off the chips from both the reamer as well as the bore and re-oil before continuing.
• While stopping the lathe, slightly relieve the tailstock pressure. DO NOT pull the reamer back before the spindle has completely stopped, as this could scar the chamber.
• Continue repeating Steps 3–9 until the reaming process is finished. For precise results, decrease cutting increments as you near the end of the chamber.

What should be done to avoid galling in the chamber?

Remove the reamer every 0.020" to 0.050" and clean off the chips from both the reamer as well as the bore and re-oil before continuing. Galling in the chamber from chips packing in the flutes can tear the metal surface in the bore and create grooves in the chamber.

What should be done if the bushing binds when being inserted?

If the bushing binds, it might leave marks inside the barrel, so it is important that you carefully support the weight of the reamer in your hand while inserting the length of the bushing into the bore.

What should be done to ensure a clean cut and tool longevity?

You will need to continue to provide enough cutting oil throughout the reaming process.

Why should the reamer not be pulled back before the spindle has completely stopped?

Do not pull the reamer back before the spindle has completely stopped, as this could scar the chamber.