1-3/8" inserts wanted

[KromeDome]

I am looking for a source for 1-3/8" inserts for one of my wood horn projects. I will be requiring at least three. There sure don't seem to be any ready-to-go as far as I can tell from a lot of googling around.

If I am unsuccessful, I plan to tool up and do a short run in case anyone may be interested. Thanks in advance.

Brian

[pos]

You can use screw to bolts adapters for that purpose.

There is one at partsexpress, but it looks like it is entirely made of plastic:
http://www.partsexpress.com/pe/showdetl.cfm?&Partnumber=264-322

There is also a P-audio adapter, but looking at the pictures it seems too long: the mouth of the driver will not line up with the surface
http://www.paacoustic.com/Product_Detail.asp?CatalogID=0118&ProductID=PC-25
You migth be able to extract the metal insert out of it tho

[Zilch]

Part them off of PC-25s, or buy the tap and make your own.... :yes:

[John W]

I too have spent time searching for these, without any luck. I was considering purchasing a pair of Parts Express waveguides for $7.60 each that have brass inserts, then pulling them off. These were the cheapest I found.
http://www.partsexpress.com/pe/showdetl.cfm?&Partnumber=270-310

If you make some up, I'd be interested.

[KromeDome]

Thanks for the replies everyone. I have decided to tool up and do a run sometime next month at the earliest. The thread is a weird one. 1-3/8"-18 NEF. The taps are not cheap... I will be milling them from bronze hollowbar. If anyone needs or wants any special configuration, PM me and let me know, there is plenty of time before I begin.

I do not have much more than a ballpark figure on cost per unit. Probably $10-$15 each.

Thanks again,

Brian