d2 para vertical blade play

Don't bend your liner!

The stop pin is drilled off center to make it adjustable, loosen it up and spin it tighten it and test. Keep doing that untill you take that play out :cool:


If your really have to push and pull on it hard to feel it, it's good to go already... don't go messing with the stop pin. If it's rocking up and down fairly easy, give it a go as there is nothing you can really screw up. No need to even take the knife apart, just loosen two screws, spin, tighten test... repeat untill it is in your spec's :)
 
Franco G said:
It is not a part of it. The compression lock has the same rule as a liner lock - NO BLADE PLAY AT ALL. It is amazing how people are talking nonsense. Let's hear Sal - would he claim (or ever claimed) that a compression lock has an 'inherent' blade play?

I never ordered a Para because I read at German Messerforum - a lot of people claim the blade play but - the other claimed no blade play at all. It means: Spyderco is leaving both the good Paras and bad Paras - it is a question of luck.

This is not a fair play, IMO.

Franco
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You don't have a compression lock yet you are giving advise about what is right and wrong? Do you even know how a compression lock works? A liner lock with verticle play could comprimise the strength of the lock if the lock bar is not in good contact with the tang. It could cause the lock bar to 'walk' with repeated application of pressure. A compression locks strength should not be effected by a little play.

I think maybe you are talking nonsense since you have no experience with the lock. I hate to break the news to you but just about every folder has some blade play if you wiggle the blade just right or with enough force. And they don't have a problem because of it.

As was stated the para has an adjustment to take out the play. So there are good paras and there is no luck involved assuming you can loosen a screw to adjust it. Maybe you shouldn't bash something that you don't know about and then yell at others when you are making assumptions.
 
Ive taken it apart a couple times, ive adjusted the stop pin, but im not sure the stop pin is off center, its seems to be a pretty exact fit into the steel liners. It has about as much 'play' as like a delica. You know, when you grab the blade and you can feel the slightest amount of movement.
 
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FlaMtnBkr said:
You don't have a compression lock yet you are giving advise about what is right and wrong? Do you even know how a compression lock works?
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1. First of all, I have a compression lock (Li'l Temperance) and I had in past in my hands the Centofante (the first compression lock) and Gunting. As a matter of fact, in those days, the Days of Gunting, it was always pointed out that there were NO BLADE PLAY.

2. I know very well how a compression lock works. It is a matter of physics (a simple classical mechanics, not a quantum mechanics). A part of liner is pushed inside the empty part of the blade tang and stops mechanically a blade rotation (or blade play). Big deal.

3. It happened accidentally that I am a scientist (physicist) who worked thru years in research in different countries, Germany, France, Switzerland, US ... If I am able to understand quantum physics, black holes, quarks and the Big Bang - believe me I can understand a compression lock too.

4. I do not complain about an infinitesimal blade play people like you and Sal can 'feel'. I am talking about an annoying blade play which, even if it does not affect safety, is NOT supposed to be present in high end knives!

5. As far as an 'adjustment' is concerned: I looked in Spyderco Catalog 2010 - there is no word about an adjustment. I think you are dreaming. Even if it is possible to adjust a lock (I would be happy if Sal could confirm that) I still claim it were a Spyderco who should do an adjustment not me.

Have a nice blade play.

Franco

P. S. Below is a photo of my Li'l Temperance (S30V steel) in company with a small Sebenza (BG-42 steel) - both have ZERO BLADE PLAY.

EDC_A_007-1.jpg
 
KarlMaldensNose said:
Three CPM D2 Paras and no play in any of them. I find that disassembling and reassembling knives with play and/or blade centering can sometimes help. Good luck.
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I am pretty sure that it is illegal to own 3 identical models of the same knife in Canada. I am here to help take one off your hands to keep you out of trouble, send one down here quickly!:D
 
The Para's stop pin is not drilled off center/eccentric. However the reason that rotating the stop often works to eliminate blade play is the fact that one side of the stop pin is often peened and shows a flat spot where it contacts the blade tang. Rotating the pin slightly exposes a fresh surface and helps eliminate blade play.
Inertia openings are to be avoided with compression locks.

Bo
 
Correct. I have 4 Paras, and one of them was acquired with some mileage on it. The lock travels almost to the other side, and it has blade play precisely because of that. I too rotated the stop pin to get it back to spec diameter, since I suspect this was a victim of flicking open and repeatedly banging against the stop pin.

My other 3 Paras have zero blade play, as well as all my 8 Millies (liner locks). Some of my backlock folders do exhibit a tiny vertical play.
 
My lock is very early, I would say about 1/3 way on the blade. I am wondering if it just breaking in over time will solve the issue. The reason it has blade play, IMO, is that the seat of the lock bar isnt fully touching on the back of the lock bar, hence slight play.
 
kirko said:
My lock is very early, I would say about 1/3 way on the blade. I am wondering if it just breaking in over time will solve the issue. The reason it has blade play, IMO, is that the seat of the lock bar isnt fully touching on the back of the lock bar, hence slight play.
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That's pretty much it.... the tolerances must be very precise on Compression Locks because not enough lock travel will cause vertical play, while too much travel causes the lock to scrape/wear the bottom of the stop pin.

You can let the lock wear-in [closing whatever small gap there is between the locking liner and the stop pin], or you can bend the liner slightly to accelerate this effect. Please don't do this if you've never done it before or don't have the proper tools. I'd say just let the lock wear-in on its own.

The stop pin isn't "off center & adjustable".... I've taken this knife apart several times and the best you can do is rotate the stop pin for reasons already outlined above.
 
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