Bowl From Board + Non-Slip Ring Chuck Combo
You get the Easy Cut System with and Parting Tool Kit and the Non-Slip Ring Chuck
ECS Multi Guide From Ron Brown’s Best, LLC 2024 The Multi Guide is an attachment meant to be used with the Easy Cut Board From A Bowl System. Its purpose it to provide the user with four predetermined cutting angles and is meant to be used as a parting tool guide with Ron Brown’s Best “P” Type parting tool. The four predetermined angles are 45, 50, 55, and 60 degrees. You may use only one angle for the entire project or use all four beginning with 45 and ending with 60 degrees. Using one angle for all of the cuts will result in a cone shaped assembly. Using all four will result in a more usual Bowl-Shaped form with a curve due to the ever-increasing cut angles. The Multi Guide must be used with the Easy Cut Board From A Bowl System and is not meant to be used as a stand-alone device. It is machined from solid Aluminum for durability and heat resistance.
Why:
We recently turned a blank 1.25” thick with our prototype Big Boy Parting tool. One of the challenges we faced with cutting rings that thick using a Plywood back plate as a friction chuck was keeping it from spinning and causing a catch. We used spray contact adhesive to attach sandpaper to the plywood in hopes it would provide enough friction to prevent our blank from spinning. It worked, but not very well. This method also ground the corner off our parting tool each time and we had to regrind the tool!
What:
So, I was thinking about how we could provide a friction chuck with a positive lock. Although the lathe might stall if we got a catch, the blank would not spin against the friction chuck. My solution is to use a two-disk friction chuck with a 4” square in the center of the front plate. We epoxied a 4” square waste block to the back of the turning blank (we will discard it later or turn it down for the base), which will fit into the recess in the front plate and stop the blank from rotating. It works like a charm!
When Sharpening the “P-Type” parting tool Blade:
Touch up only the very ends, never the top.
Cardboard Spoil Board
If we wish to avoid making cuts directly into the front plate of HDPE, we will need to create some kind of spoil board. It should be inexpensive, made of readily available material, and work with our square waste block. Drawing from my CNC experience, I have a solution! Regular cardboard is approximately 1/8” thick. Cut an 11.5” disk with a 4” square hole in the middle. Slip it over the 4” square waste block against your blank and mount the whole thing into the Non-Slip Ring Chuck; it's simple, cheap, and effective.
I’ve used this cardboard trick for years with my CNC when I need to cut through the material, but I don’t want to destroy my CNC table. Using this common cardboard spoil board trick, your non-slip ring chuck should last indefinitely. You should be able to use the cardboard spoil board multiple times before you have to discard it.
Best of all, the Non-Slip Ring Chuck can be used with any thickness or size blank. However, it is not suitable for 10 swing lathes as the disks are 11-3/8” in diameter.