Brass Threaded Inserts source UPDATE!!! - AAW Forum

Don Wattenhofer said:

What happened to the thread chasing?
The main points that I can see against metal or plastic inserts is the fact that wood is hydroscopic meaning that it is continually equalizing with it's environment as in expanding and contracting with the seasons or the difference between tropical humidity and an airconditioned interior. The problem gets worse as the diameter increases. The best method IMHO is a coarse thread with sloppy tolerances cut directly into the wood and if necessary reinforced with CA.

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I posted this on the WOW site. This answers why I do not chase threads on my urns.
Sadly, Rick Brantley passed away. We were in contact till his last days. He had time to teach his son how to do it. But I have not heard from him. Rick was diagnosed with cancer. It was very fast, under 3 months and he left us. Very sad. The reason I started using his brass inserts is that I like my urn opening wide. A minimum of 4 inches. I used one of my urns for the first time a few years ago. I had trouble pouring my Grandma's ashes into the small hand chased threads lid. This was in Argentina. I do not know if in the USA they give you clean ashes. I had some fairly big pieces of bones. Just horrible. That day I decide to use big openings. How in the world can you pour ashes through a 2 inch or smaller opening? A famous turner told me, tell them to use a funnel! Then what? Ashes get stuck in the funnel. Also, I recommend leaving ashes in a plastic bag. With the 3,5 or 4 in opening is easy to slip in the bag with the ashes. I do not have pieces big enough of dense woods to make big openings with hand chased threads, and bigger openings I would do maybe 12 tpi. Coarser threads than my boxes. I do not chase threads with soft woods, I do not like to use CA I'm going to try buying the brass inserts and cutting them on my lathe. Rick said it wasn't that hard. Stay tuned!
Edit

I posted this on the WOW site. This answers why I do not chase threads on my urns.Sadly, Rick Brantley passed away. We were in contact till his last days. He had time to teach his son how to do it. But I have not heard from him. Rick was diagnosed with cancer. It was very fast, under 3 months and he left us. Very sad. The reason I started using his brass inserts is that I like my urn opening wide. A minimum of 4 inches. I used one of my urns for the first time a few years ago. I had trouble pouring my Grandma's ashes into the small hand chased threads lid. This was in Argentina. I do not know if in the USA they give you clean ashes. I had some fairly big pieces of bones. Just horrible. That day I decide to use big openings. How in the world can you pour ashes through a 2 inch or smaller opening? A famous turner told me, tell them to use a funnel! Then what? Ashes get stuck in the funnel. Also, I recommend leaving ashes in a plastic bag. With the 3,5 or 4 in opening is easy to slip in the bag with the ashes. I do not have pieces big enough of dense woods to make big openings with hand chased threads, and bigger openings I would do maybe 12 tpi. Coarser threads than my boxes. I do not chase threads with soft woods, I do not like to use CA I'm going to try buying the brass inserts and cutting them on my lathe. Rick said it wasn't that hard. Stay tuned!Edit

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Personally, I use Sandvik inserts and toolholders for threading (and turning, too). Yes, there are inserts for internal threading.

This may turn out to be a lot more expensive than you realize, as you will need a variety of sizes for cutting different threads, plus you need the toolholders as well.

You could just buy some nice carbide threading bars, say from ThinBit or Micro 100, and just resharpen them as needed, or just buy new ones as they wear out.

But, if you want to go inserts and toolholders, I would suggest calling your local Sandvik reseller and ask for a copy of their Main Catalog. That will cover just about anything that you might need. Or, if you are doing mainly small pieces, then check out

While Sandvik carbide threading inserts seem expensive, the ones that I use have three points on each piece, so if divided by three, the cost isn't that bad.

I must say that they wear exceptionally well.

I find that I'm mainly only making two or three sizes of threads nowadays, so I overbought initially. Think carefully about what thread sizes you are likely to use the most, then order a few inserts for those threads. You can always buy more later.

eBay is often a good source for Sandvik threading inserts.

As for cut knurling, that requires a special toolholder also, one that holds two carbide knurling wheels. And of course, there a wide variety of pitches to choose from there also. Visit the websites for Zeus, Quick,

You've opened a can of worms when you start looking at carbide inserts, especially for threading.Personally, I use Sandvik inserts and toolholders for threading (and turning, too). Yes, there are inserts for internal threading.This may turn out to be a lot more expensive than you realize, as you will need a variety of sizes for cutting different threads, plus you need the toolholders as well.You could just buy some nice carbide threading bars, say from ThinBit or Micro 100, and just resharpen them as needed, or just buy new ones as they wear out.But, if you want to go inserts and toolholders, I would suggest calling your local Sandvik reseller and ask for a copy of their Main Catalog. That will cover just about anything that you might need. Or, if you are doing mainly small pieces, then check out Sandvik online, under Small Part Machining. Download their files, read them all, then ask questions.While Sandvik carbide threading inserts seem expensive, the ones that I use have three points on each piece, so if divided by three, the cost isn't that bad.I must say that they wear exceptionally well.I find that I'm mainly only making two or three sizes of threads nowadays, so I overbought initially. Think carefully about what thread sizes you are likely to use the most, then order a few inserts for those threads. You can always buy more later.eBay is often a good source for Sandvik threading inserts.As for cut knurling, that requires a special toolholder also, one that holds two carbide knurling wheels. And of course, there a wide variety of pitches to choose from there also. Visit the websites for IFanger Dorian , and Accu Track . They all have a wealth of info for download.

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