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Manufacturers of innovative workshop tooling, and weird stuff
The Acute Tool Sharpening System has been designed as an easily built and cost effective way to make the shaping and sharpening of a wide range of tool bits and cutters in the workshop as simple as possible.
Crobalt has been manufactured in the USA since the 1920s and is a cast alloy made from 50% Cobalt, with the other 50% being Tungsten, Chromium, their carbides and some other additives.
The Diamond Tool Holder was originally developed in Australia by Des Burke in 1985 and manufactured by him until 2006. The name came from the shape the tool bit takes on when seen from above.
The FoR (Front or Rear) Inverted Parting Tool Holder operates with the blade held upside down and can be used in a front or rear tool post.
Turn large and small internal and external radii at any position on the workpiece. Adaptable to fit on the cross slide of virtually any small to medium sized lathes, and quick to swap over in place of the top slide.
The premium quality blades we stock are sourced from the largest manufacturer of repetition lathe tooling in the USA. The blades have a slight hollow grind along the top (bottom) cutting edge which assists in curling the chip for easier ejection from the cut.
Helpful Videos
The Acute Tool Sharpening System #10 - Sharpening a two flute end mill
The Acute Tool Sharpening System #1 - BuildingThe Table
The Acute Tool Sharpening System #2 Building the Work Arm Part 1
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This is a selection of photos of projects that I have been involved with, some were made on commission, others just for fun.
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08-29-2013, 07:10 AM
After looking at many different versions of the tangential tool holder this is what I made.
The holder is 1' square CRS, the tool is 5/16', ground to a 30° point, roughed on the belt sander and finished on the disc sander, honed quickly on an arkansas stone. I did round the front edge slightly, but only on the arkansas stone, so it is very little. The tool is held at 16° angle to the front, but the tool is straight in line with the axis of the holder, I did not angle it to the right, as most that I have seen are.
The 1/4 -20 allen cap screw is counterbored flush on the left side, it pulls a 'round nut' with a chamfer on it against the tool. The hole for the tool was drilled on the mill at a 16° angle and then filed square by hand. It took 45 minutes to file it square, to a snug fit. The hand filing was not a big deal to do at all.
I rabbetted the holder to fit into the QCTP. I tried it out on some 3/4' drill rod, it is good hard stuff. The cutter gave a good finish, the best was as a shear cut. I think as I use this tool, it needs a little more round on the point, and will do an even better job.
The deepest cut I took so far was .040', the tool was very rigid . It was an effortless cut on the SB13.
Here are some pictures. Thanks, Larry
The holder is 1' square CRS, the tool is 5/16', ground to a 30° point, roughed on the belt sander and finished on the disc sander, honed quickly on an arkansas stone. I did round the front edge slightly, but only on the arkansas stone, so it is very little. The tool is held at 16° angle to the front, but the tool is straight in line with the axis of the holder, I did not angle it to the right, as most that I have seen are.
The 1/4 -20 allen cap screw is counterbored flush on the left side, it pulls a 'round nut' with a chamfer on it against the tool. The hole for the tool was drilled on the mill at a 16° angle and then filed square by hand. It took 45 minutes to file it square, to a snug fit. The hand filing was not a big deal to do at all.
I rabbetted the holder to fit into the QCTP. I tried it out on some 3/4' drill rod, it is good hard stuff. The cutter gave a good finish, the best was as a shear cut. I think as I use this tool, it needs a little more round on the point, and will do an even better job.
The deepest cut I took so far was .040', the tool was very rigid . It was an effortless cut on the SB13.
Here are some pictures. Thanks, Larry
LJP, proud to be a member of MetalworkingFun Forum since Aug 2013.
08-29-2013, 11:35 AM
Nice job on the tool Larry. I've got one for my mini-lathe but could never get good results from it. Probably operator error though.
Ed
Ed
08-29-2013, 02:39 PM
The one I just built for my 7x works great. I also used 1'x1' CRS bar, and made it to fit my OXA QCTP. Haven't used it much, but happy with the rigidity. Will soon try a small radius on the cutting tip.
What prompted 16 deg?
Chuck
What prompted 16 deg?
Chuck
Micromark 7x14 Lathe, X2 Mill , old Green 4x6 bandsaw
The difficult takes me a while, the impossible takes a little longer.
The difficult takes me a while, the impossible takes a little longer.
08-29-2013, 03:06 PM (This post was last modified: 08-29-2013, 03:07 PM by DaveH.)
Very nice Larry - a very useful tool to have, nicely made
DaveH
DaveH
08-29-2013, 03:27 PM
(08-29-2013, 02:39 PM)chucketn Wrote: The one I just built for my 7x works great. I also used 1'x1' CRS bar, and made it to fit my OXA QCTP. Haven't used it muck, but happy with the rigidity. Will soon try a small radius on the cutting tip.
What prompted 16 deg?
Chuck
Chuck, the more I looked at different designs, and the more I read from the guys that made them, they thought the angle was not critical. This is not the only 16° holder out there. I wanted to have a good ridgid holder, so this gave me some more 'overhang' over the front of the holder.
At first I started to design a left and a right hand tool, but decided to keep the first one simple, and see how it works. It has all worked out well, so now I will probably go ahead with right and left hand tools. Larry
LJP, proud to be a member of MetalworkingFun Forum since Aug 2013.
08-29-2013, 04:12 PM
Very nicely made
Well presented post
This is something I need to make
John
Well presented post
This is something I need to make
John
08-29-2013, 05:51 PM
Next video project, John?
Micromark 7x14 Lathe, X2 Mill , old Green 4x6 bandsaw
The difficult takes me a while, the impossible takes a little longer.
The difficult takes me a while, the impossible takes a little longer.
08-29-2013, 06:07 PM
I purchased the Bay-Com Diamond toolholder back when my shop was supporting itself financially. I have ever since thought that it's the best and easiest way to use HSS without having to freehand grind and hone the HS tool.
I'll eventually get around to making some my self for turning away from the headstock etc.
I'll eventually get around to making some my self for turning away from the headstock etc.
Busy Bee 12-36 lathe, Busy Bee Mill drill, Busy Bee 4x6 bandsaw, Homemade 9x17 bandsaw, Ad infinitum.
08-29-2013, 07:51 PM
Nicely done Larry. I especially like the clamping system. I used a simple screw system, but the screw head interferes when you try facing.
Free advice is worth exactly what you payed for it.
Greg
Greg
08-29-2013, 11:57 PM
(08-29-2013, 06:07 PM)stevec Wrote: I purchased the Bay-Com Diamond toolholder back when my shop was supporting itself financially. I have ever since thought that it's the best and easiest way to use HSS without having to freehand grind and hone the HS tool.
I'll eventually get around to making some my self for turning away from the headstock etc.
Same here. It's a great tool, but I'd rather make a similar one that faces straight out so I can use it for left or right cuts. They want you to buy L and R versions, which have their uses, but it seems like the OP's design will cover the majority. That said, the bay tool holder does work great.