Threaded T/D inserts

[BrushWolf]

I'm looking for threaded insert that have a 3/8 neck on them that fits into the limb. I originally bought them from old master crafters. When they closed I found them through another individual that I can't seem to find anymore. Would anyone know where I could order these inserts cause I'm down to my last pair? The drilling jig I purchased through old masters crafters is setup for these inserts and drilling the 3/8" hole in the limb.

[kennym]

There was a fellow selling those jigs and inserts , went by email of sandlot or sandbox something, but he sold out also.

I "think" Bob Sarrels was using that system but no idea where he got the inserts.

You could probably have a shop turn some, but I'd bet it would be costly...

Good luck !!

[BrushWolf]

Yeah that's the guy sandlot. I tried to get ahold of him but no luck. Tried to get some made but that's been a struggle also

[mmattockx]

Are there any pictures of these inserts? Dimensions would be helpful as well.


Mark

[BrushWolf]

Threaded part is 7/8 " long with a 3/8" neck height and diameter

[BrushWolf]

Off of old master crafters old Facebook page

[mmattockx]

Both right hand threads? What is overall length? Material? What did they sell for previously?

There are a fair number of online machine shop type services that could produce these based on a drawing or solid model, have you looked into any of them?


Mark

[BrushWolf]

I haven't priced anything online. They were stainless steel. I'd have to measure them to be exact but I think they are 1-1/8"long. Outside threads are 7/8 I'm sure of that. Neck is 1/4" to 3/8" long

[mmattockx]

I haven't priced anything online. They were stainless steel. I'd have to measure them to be exact but I think they are 1-1/8"long. Outside threads are 7/8 I'm sure of that. Neck is 1/4" to 3/8" long

Do you have any pictures of one installed? How many of these do people go through? Really, the question is how big should production batches be? 50? 100? 500? It's hard to get decent pricing without larger orders, so that needs to be maximized within practicality.


Mark

[BrushWolf]

Do you have someone or someone place that could do the work?

[mmattockx]

Do you have someone or someone place that could do the work?

There are many machine shops that can do that work. Cost is the only issue and would need to be shopped around for. I have one semi-local guy that I would try first, I'm just trying to get an idea of the size of an order so I know approximately how big that order should be. Lots of places have a minimum order size and that often dictates how many parts are made per batch for small stuff like this, but if the minimum is way too big then it isn't worth it.

What did they sell for previously?


Mark

[Camp Creek]

I can make a handful for you if you give me good dimensions and aren't in a hurry

[BrushWolf]

Yeah let me get something drawn up and see what you think

[Kirkll]

I haven't priced anything online. They were stainless steel. I'd have to measure them to be exact but I think they are 1-1/8"long. Outside threads are 7/8 I'm sure of that. Neck is 1/4" to 3/8" long

The outside is 7/8" ?    Standard inserts are 1/2"-13 thread with 5/16"-18 inside. T

You would much be better off going to a 2 location pin system and just use standard inserts, and over size the bolt hole on your limbs. The inconsistency in the inserts themselves, plus the tap drift in different riser materials is going to give you inconsistent results centering your limb bolt precisely. That's a bit more than 2 cents worth there. Give it some thought.   Kirk

[mmattockx]

The outside is 7/8" ?

The outside threads are 7/8" long. You are correct on the 1/2-13 size.


Mark

[Jegs.mich]

Maybe an option if you are Handy. Buy some dog end set screws and drill and tap the center yourself. I think this price is for a hundred count.

[Camp Creek]

I'm afraid those would be hardened to the point it would be extremely difficult to drill and tap them.

[Camp Creek]

I just made a CAD model and uploaded it to a prototyping service we use.  Even getting these made in China, they'd cost ~$15ea for 50 of them out of stainless steel; probably a bit more than you'd want to pay.  If you get me some dimensions, I can probably make a few on our lathe out of some low grade stainless 1/2" bolts, but it may be a while until I can get to it...

[BrushWolf]

I can make a handful for you if you give me good dimensions and aren't in a hurry

Been waiting on some pricing from machine shops. For what they want it's cheaper to buy my own lathe. 
If you'd still be interested the neck is 1/4" above the last thread and is .375 in diameter. Overall length is 1.127" let me know what you have in mind. Thanks

[BrushWolf]

I haven't priced anything online. They were stainless steel. I'd have to measure them to be exact but I think they are 1-1/8"long. Outside threads are 7/8 I'm sure of that. Neck is 1/4" to 3/8" long

The outside is 7/8" ?    Standard inserts are 1/2"-13 thread with 5/16"-18 inside. T

You would much be better off going to a 2 location pin system and just use standard inserts, and over size the bolt hole on your limbs. The inconsistency in the inserts themselves, plus the tap drift in different riser materials is going to give you inconsistent results centering your limb bolt precisely. That's a bit more than 2 cents worth there. Give it some thought.  Kirk

I did the two pin system years before I started using the drilling jig and inserts I got thru old master crafters
I always seemed to struggle with that. The inserts I've been trying to get more of just gave me better results. But the option to go back to a two pin is always open. I might just have to do something different from now on.