Need help with shaper bushing

[Patrick Kane]

I have a few cutterhead bodies that are part of a matched set, but they are bored to 45.8-46mm. They are the coping heads to the matched rail/stile sets if that sheds additional light. I have a few different sets from misenheimer and they each have typical rotation sticking profile in 1.25" bore, reverse rotation sticking in 1.25" bore, and then a coping profile with the larger bore. I cannot find a single online source to bush this larger bore down to 1.25" spindle. Has anyone experienced this size bore before? I may need to have a custom tbushing made, which i can have done im sure, but i wanted to see if the group had a commercial source first.

[Rod Sheridan]

Hi Patrick, I haven’t seen one available off the shelf.

You can either have one made, or if you can find a 50mm sleeve to 1.25” then you could have the cutter bored.

Regards, Rod

[Patrick Kane]

Hey Rod,

I didnt think of going that route, so thanks for the other option. I figured this was going to be a custom thing. And i was incorrect, the coping heads are 1.25". The stick cutterhead is the larger bore. Im guessing 45-46mm is a common moulder spindle?

[David Kumm]

Bobby at Woodworkerstoolworks.com will make you a set. Dave

[Rod Sheridan]

Hey Rod,

I didnt think of going that route, so thanks for the other option. I figured this was going to be a custom thing. And i was incorrect, the coping heads are 1.25". The stick cutterhead is the larger bore. Im guessing 45-46mm is a common moulder spindle?

Hi, 40 and 50mm are common, I wonder if you have a 1.75" bore?

Regards, Rod.

[Patrick Kane]

I thought the same thing, why is it 45.8mm? But the imperial equivalent isnt something that makes sense either. These cutterheads are out of a proshop, so they might have been using something like a hydrolock sleeve on these heads. I dont know enough about that stuff to give a competent answer.

David, thanks for the link. Im going to reach out to the smalltime local machinist that fixed a unisaw arbor for me awhile ago and see if he can do it for a decent price. Im assuming its going to be $50-100 for something like this. If he cant, then im going to Bobby. I would like stay local simply to reduce the risk of a poor fit. I want to hand the guy the cutterhead and remove myself from any form of measurement or involvement.

[J.R. Rutter]

1-13/16" is a common moulder spindle diameter. Sounds like that is what you have. 46mm = 1.811. Are you pretty confident in your ID measurement?

[Bill Dufour]

probably the cheapest is to buy a sleeve of the correct outer diameter then hire someone to bore to suit. If it is a small amount you could do it with an adjustable reamer.
Bil lD

[Darcy Warner]

30, 40 and 50mm common metric, 1 1/2, 1 13/16, 2 1/8"

I am pretty sure you have 1 13/16 tooling.

[Patrick Kane]

This is even better. 1-13/16" to 1-1/4" bushings do exist. I have a cheapy $15-20 pair of calipers, so im sure I am not getting the absolute best and most accurate measurement on the bore. I did it again last night and im getting consistent 1.808". Im going to order two bushings from Global tooling, and hope that they work out. They should though.

[J.R. Rutter]

You can always chill the bushings and heat the tool body to ease install.