Penn State Industries Video on Negative Rake Carbide

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This PSI carbide tip is just another knock off of the Easy Wood Tools negative rake carbide. The quality is not the same and it will have a shorter use life that the EWT carbides. Just go with the EWT carbide, it is an actual American made product and the cutting tips stay sharper noticeably longer.
 
SabertoothBunny said:
This PSI carbide tip is just another knock off of the Easy Wood Tools negative rake carbide. The quality is not the same and it will have a shorter use life that the EWT carbides. Just go with the EWT carbide, it is an actual American made product and the cutting tips stay sharper noticeably longer.
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I very much doubt that the EWT carbide insert is American made. As someone who purchased thousands of inserts…the finest quality carbide inserts were manufactured in Germany (IMO). Most inserts are manufactured in China today and depending on the source of origin are good quality. But heck yah, if it makes you feel better then go ahead and purchase the overpriced EWT inserts. It may be of interest to read the attachment. Manufacturing solid carbide inserts is a very complex manufacturing process that requires precision,intensive knowledge and expensive equipment. Unlikely that a small
manufacturer from KY can successfully make carbide inserts in-house.
 

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To join the thread; Negative rake is over-rated and I am not a fan. The only thing that matters is the tool presentation of the tool to the work and the force-vectors on the work piece. I use flat-top carbide bits and present them below center. I hone them on a diamond credit card sized hone. I have bits that are many years old. I had to throw a bit away not because it wasn't sharp, but because it was too thin! I had honed it down to the point where the screw bottomed out in the hole and couldn't tighten it down.

Present the tool horizontal and above center and you will get pits galore. Present the tool below center and use gentle pressure and get endless ribbons. The further below center you go the more aggressive the cut and the more force is applied to the blank. You are pushing the tool tip into the blank and not prying the blank cutter edge outward.
 
SabertoothBunny said:
This PSI carbide tip is just another knock off of the Easy Wood Tools negative rake carbide. The quality is not the same and it will have a shorter use life that the EWT carbides. Just go with the EWT carbide, it is an actual American made product and the cutting tips stay sharper noticeably longer.
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@SabertoothBunny - I think it would be fair to say that you are a demonstrator for EWT in your reply, however, I agree, their products are well made, and they stand behind their stuff.

As for Negative Rake edges, I do believe they are an advantage for many materials and turners, as the rake angle reduces the aggressiveness of a cut allowing a little more leeway for differing skill levels and easily pitted materials. Not going to get into the argument of carbide vs classic tool steel....lol.

Kevin
 
ed4copies said:
The current owners of Easy Wood Tools have been producing carbide tips for many years, prior to buying EWT. Yes, their manufacturing is in the USA.

Just clarifying the facts-you can view it any way you like.
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Have you visited their manufacturing facility where the carbide inserts are manufactured?
 
wood-of-1kind said:
I very much doubt that the EWT carbide insert is American made. As someone who purchased thousands of inserts…the finest quality carbide inserts were manufactured in Germany (IMO). Most inserts are manufactured in China today and depending on the source of origin are good quality. But heck yah, if it makes you feel better then go ahead and purchase the overpriced EWT inserts.
Click to expand...

EWT is all made in their factory in Kentucky. Yes, it is American made. I have not used the German ones you are referencing.
 
SabertoothBunny said:
EWT is all made in their factory in Kentucky. Yes, it is American made. I have not used the German ones you are referencing.
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So they say. Please forgive me for having my doubts in terms of the inserts. No doubt about the tools (steel) and wood
handles being made in KY. Quite frankly the Caliendo's merely adapted to use the already existing carbide inserts that were
being used in the woodworking industry. Chris was quite clever to put the inserts and use them to produce TURNING TOOLS. I do not wish to stir controversy but merely wish to shed light on the origins and use of carbide inserts.
 
randyrls said:
To join the thread; Negative rake is over-rated and I am not a fan. The only thing that matters is the tool presentation of the tool to the work and the force-vectors on the work piece. I use flat-top carbide bits and present them below center. I hone them on a diamond credit card sized hone. I have bits that are many years old. I had to throw a bit away not because it wasn't sharp, but because it was too thin! I had honed it down to the point where the screw bottomed out in the hole and couldn't tighten it down.

Present the tool horizontal and above center and you will get pits galore. Present the tool below center and use gentle pressure and get endless ribbons. The further below center you go the more aggressive the cut and the more force is applied to the blank. You are pushing the tool tip into the blank and not prying the blank cutter edge outward.
Click to expand...
Thank you Randy. While I have slowed down considerably lately and not done much turning - I will have to say that way back before the "negative rake" first came on (and worked well for those who used it) I had been doing exactly as you and accomplishing the same finish. The angles of the negative rake can be accomplished with flat inserts (or as with me - scrapers ) by the level that the tool is presented.

I mentioned this once several years ago and got bombarded by some engineering yak. I just let it go.
 
wood-of-1kind said:
So they say. Please forgive me for having my doubts in terms of the inserts. No doubt about the tools (steel) and wood
handles being made in KY. Quite frankly the Caliendo's merely adapted to use the already existing carbide inserts that were
being used in the woodworking industry. Chris was quite clever to put the inserts and use them to produce TURNING TOOLS. I do not wish to stir controversy but merely wish to shed light on the origins and use of carbide inserts.
Click to expand...
Hello wood-of-1kind. I certainly understand your skepticism on assurances of Made in USA products in today's great decrease in true global manufacturing. As one of the owners of Easy Wood Tools, I can assure you that 100% of our EWT Carbide Cutters are 100% Made in the USA. In fact, EWT was the first to bring replaceable carbide-tipped turning tools to market, with cutters specifically designed for woodturning as other carbide cutters used in industrial applications were/are too aggressive and not appropriate for turning. We are also the only carbide tool company in the USA that also makes their own carbide cutters, right here in our Lexington, KY plant. Chris at Easy Wood Tools has been an expert in carbide for 40 years, and prior to owning EWT we have been in industrial carbide manufacturing for 24 years (in the USA) with owning the development, design and manufacturing of all EWT's carbide since the beginning of EWT in 2008. Tungsten (used to manufacture carbide) is a mined mineral as a raw powder and most of the world's supply of Tungsten is mined from Asia. For our carbide cutters that powder is blended with other binders and formed with our proprietary "recipe" and finished with our proprietary grinding process to produce our sharp, long-lasting edge. All done right here in the USA. Below is a link to our video showing how our products are made by us, and at the 2:53 mark we show a small glimpse of our carbide manufacturing with one of our team members. Unfortunately, being that many wish to copy us we cannot show the entire manufacturing process. If you would like any other reassurance that our EWT Carbide Cutters are 100% Made in USA I would be happy to provide any information you would like.
 
Under full disclosure I am also a demonstrator for Easy Wood Tools - I see we have another one above. And better yet - I have been to one of Easy Wood Tools manufacturing facilities and have seen the cutter heads being manufactured. I see Christy recently posted on the manufacturing process - so here is my take on using carbide and from the original question - negative rake cutters.

Here is a quick video I did a few years ago where I talk about my experience with the EWT traditional carbide cutter and the EWT negative rake cutters. I go over a few of the questions and comments above. Hope this helps. I always cut on the center line and use both tools regularly.

Easy Wood Tools - Carbide Cutters - Round Cutter

I use the square cutter for wood and here is a video I did on that technique -

Easy Wood Tools - Cutting Wood
 
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