Good information, Thanks.
Good information, Thanks.
That's a pretty concise summary of my opinion as well. But then, Gary and I only used an Accu-Finish I and II side-by-side for 30 hours straight, so what do we know?Originally Posted by JCHannum
The Accu-Finish II has a more substantial incline mechanism than the AF I, but they're both essentially a 1/4 HP belt driven motor in a stamped sheetmetal box. The table is stamped sheetmetal too.
It's just a high-tech version of Forrest/Lane's power lap. 1/2 HP, 3-phase 1100 RPM motor on a VFD, so I can turn it down to 275 RPM and it still has immense torque, but I can turn it up and use it for a disc grinder.Originally Posted by Gcude
This is Lane's. I'm doing the tilt mechanism differently. I'll have it done by Sunday:
"The problem with the world is that the intelligent people are full of doubts, while the stupid ones are full of confidence."
That is a good illustration of what can be done by the HSM. The 1/4HP motor of the Accu Finish units pretty well precludes any thoughts of rapid metal removal. They are hones, not grinders and, as such, are secondary operation machines.
Over the weekend, I caught up on the latest Home Shop Machinist that had been neglected while on vacation. It has the continuation of Mike Ward's excellent series in scraping with the promise of his power lap coming in the next article. I would suggest anyone considering one of these machines to wait to see what Mike has to offer.
The GrindRLap pictured is missing a part. There is a protractor table that sits on the tilting table pictured. With the protractor in place you can move the tool from side to side while the wheel is stationary. So the GrindRLap has two modes of operation. By moving the lever on the side of the machine the wheel will either oscillate or sit still. I use mine in both modes, oscillating for roughing and still for finishing. I have used the Glendo machines and prefer the GrindRLap. It's too bad they are no longer made by Leonard. For a while you could buy a Chinese one for about $900.00 but I don't know if they are still sold. Instead of buying a Glendo machine I looked online for a GrindRLap for a couple years. One thing I like about the GringRLap is that I can make my own wheels for it. I use cast iron and diamond paste. This allows me to have roughing and finishing wheels. I can get VERY good finishes on both carbide and HSS. Using coarse diamond paste enables me to rough tools quickly-fast enough in fact that I have not used a high speed diamond wheel for years when grinding carbide form tools for the lathe. Even though I have a T&C grinder and a surface grinder with a full compliment of diamond wheels it's usually faster to just rough on the GrindRLap by the time setup is counted.Originally Posted by Arthur.Marks
You've all posted some interesting thoughts. Thanks again.
I have a vertical/horizontal diamond wheel unit made by Sunnen. Uses 5" or 6" wheels. In the vertical position(you just tilt the box with the motor and wheel over to make it vertical),there is a sliding table with miter gauge.
This unit cost $3000.00 new last time I checked,and the wheels are something like $275.00.
However,Rio Grande jewelry making supplies catalog has thin,sheet metal wheels,electroplated with diamonds in a nickel matrix,either 5" or 6" dia(can't remember),for about $70.00. I intend to get one of these and glue it down to a steel disc that I can turn to fit the grinder,which is very simple. No need to pay so much for thick steel wheels,when you can get the same diamonds much cheaper. If this works well,I'll buy some different grits. I believe these are sold for lapidary.
The makers of the unit also sell a white ceramic wheel to be used with diamond compound,but the ceramic disc costs as much as the diamond wheels. I had 1 at work. Glad I found the Sunnen for home shop.
It sounds like either Sunnen or Glendo copied the other...... That description of the sunnen would fit the Glendo accufinish nicely.