question about pin hole size in tang

[samuraistuart]

Stacy, I noticed on a recent thread you recommended the pin holes in the tang be a little larger than the actual pin size. For example, if the pin is 1/4", I think you recommended a 5/16" hole. Is there a particular reason for the larger hole? I drill my holes 1/8" and use 1/8" brass rod (the pin stock I have is actually slightly oversize and I have to turn it down with my cordless drill and sandpaper), because I thought you wanted the pins to fit snug. Having the larger hole will certainly make the final fitting/epoxying of the scales a whole lot easier. I guess if you apply epoxy liberally in that pin hole, the epoxy will fill it and be able to take lateral forces as well as the pin would in a tight hole?

 

[EmbraceTheEdge]

I don't have anything to add but am curious about this too. I have drilled 1/8" and used 1/8" Brass rod without a problem. Same with 3/16". But... When I tried a 1/4" hole with a 1/4" aluminum rod it didn't work at all. I ended up using brute force and it was not a fun experience.

 

[12345678910]

Holes can shrink in heat treat.

 

[Tom Lewis]

For 1/8" holes I use a #30 drill. for 1/4" holes, I use a letter F drill. The #30 and letter F drills are a little bit larger than 1/8" and 1/4" respectively. This works well for me.