Compression Lock Up and Down Play

[MattM68]

As for stop pins, they aren't perfectly round nor are they drilled perfectly centered, so they have a sort of cam lobe effect to them and you can turn them small amounts and effect lock up and play. I don't recall what model but there was a knife purposely built this way.

Right. I actually tried rotating my stop pin, but that didn't help at all. It changed the depth of my lockup, but never helped reduce the play. Whatever I did seems to have worked though.

And I believe the Benchmade MPR and the 761 use that adjustable stop pin system. I'm not a big fan of those designs, but it's an interesting concept.

Matt

[Michal O]

Make sure your stop pin is tightened down, on both sides. Dunno why, but if it's loose or backed out at all it can introduce vertical play on the PM2.

Snugging that down and keeping an eye on it has fixed all vertical play issues on my PM2.

I had same thing in Amalgam. When screws are little too loose [but without side play], there is very tiny up and down play. I know this is 7 years old topic, but helped me a lot.

[Big John]

No pm2 or Shaman I've owned (all pre-2020) had any lock rock, that I can remember.

The one compression lock I bought recently (2022 Shaman burlap s90v) does have some.

[Skywalker]

Make sure your stop pin is tightened down, on both sides. Dunno why, but if it's loose or backed out at all it can introduce vertical play on the PM2.

Snugging that down and keeping an eye on it has fixed all vertical play issues on my PM2.

I had same thing in Amalgam. When screws are little too loose [but without side play], there is very tiny up and down play. I know this is 7 years old topic, but helped me a lot.

I'm just glad I'm not the only one that trawls old threads for info, haha

That site:forum.spyderco.com search turns up some real gems on occasion.