Top bolster rivet

[HVAC]

what size is the top bolster rivet that holds the blade? thanks for your help

[jw517]

It can be any size. You have to remove it and measure.

[HVAC]

It can be any size. You have to remove it and measure.

Let's say we are talking about Frank B. 11" swivel bolster, all of them would be a different size? Thanks

[jw517]

I’ve never had one apart. I doubt anybody would guarantee you a size. Maybe Bill knows.

[jw517]

I would think somewhere between 2—3 mm.

[Mumbleypeg]

Post your question in the Knife Repair and Restoration forum (where the AAPK knife mechanics will see it). Someone there will likely know. viewforum.php?f=37

Ken

[HVAC]

Post your question in the Knife Repair and Restoration forum (where the AAPK knife mechanics will see it). Someone there will likely know.

Ken

Thank You

[Killgar]

Hmmm, let me see, where did I put those Frank Beltrame blades .

I buy Frank Beltrame 11" swivel bolster stilettos to take them apart and use their parts for other knives.

These however are all 2.0's, with the 4mm thick blades, but I wouldn't be surprised if the pivot holes stayed the same from the older version.

Alright, the size of the pivot hole- The pivot holes in the blades are not a standard (SAE) size. It has been my experience that they, or whomever is assembling them knives in the US, use slightly undersized pivot pins 7/64ths of an inch in diameter.

If I were working on a Frank Beltrame stiletto, and I have, I would start with 1/8th" pin stock, and slowly reduce it for a custom fit. All of the pivot holes I've ever encountered on FB stilettos (more than the ones pictured), had holes a fraction under 1/8th". With the exception of one, that had a slightly oversized hole, but it was a perfect 1/8th", so it worked out great for my rebuild since I was using a 1/8th" screw/barrel pivot.

And the closest rod/drill gauge size to the blade pivot holes, without going over, is 33. So if you want to drill a hole, like if you are making custom liners or bolsters, I'd recommend using a size 33 drill bit, and then slowly working your way up by hand until you get a custom 1/8th" fit (wrapping sandpaper around the blunt end of a smaller drill bit and twisting it around in the hole to slowly and gradually make it bigger).

I hope all this helps .

[HVAC]

Hmmm, let me see, where did I put those Frank Beltrame blades .

I buy Frank Beltrame 11" swivel bolster stilettos to take them apart and use their parts for other knives.

These however are all 2.0's, with the 4mm thick blades, but I wouldn't be surprised if the pivot holes stayed the same from the older version.

Alright, the size of the pivot hole- The pivot holes in the blades are not a standard (SAE) size. It has been my experience that they, or whomever is assembling them knives in the US, use slightly undersized pivot pins 7/64ths of an inch in diameter.

If I were working on a Frank Beltrame stiletto, and I have, I would start with 1/8th" pin stock, and slowly reduce it for a custom fit. All of the pivot holes I've ever encountered on FB stilettos (more than the ones pictured), had holes a fraction under 1/8th". With the exception of one, that had a slightly oversized hole, but it was a perfect 1/8th", so it worked out great for my rebuild since I was using a 1/8th" screw/barrel pivot.

And the closest rod/drill gauge size to the blade pivot holes, without going over, is 33. So if you want to drill a hole, like if you are making custom liners or bolsters, I'd recommend using a size 33 drill bit, and then slowly working your way up by hand until you get a custom 1/8th" fit (wrapping sandpaper around the blunt end of a smaller drill bit and twisting it around in the hole to slowly and gradually make it bigger).

I hope all this helps .

This is great information, thank you

[Killgar]

You're welcome.

And it just occurred to me that in Italy they probably use metric size pin stock, so I did some measuring, and 3mm is a very close fit to the holes in my blades.

Also, just because I had one around, a 4-40 bolt is also a close fit (but a 3mm bolt is even closer).

[HVAC]

You're welcome.

And it just occurred to me that in Italy they probably use metric size pin stock, so I did some measuring, and 3mm is a very close fit to the holes in my blades.

Also, just because I had one around, a 4-40 bolt is also a close fit (but a 3mm bolt is even closer).

Very helpful, Thanks