Luckypaul777 wrote:Charlie and Perry: this is my second time dabbling in the hobby, I never had celluloid's before. I haven't noticed any problems; is this the fate of all celluloid knives? I knew; that they could have a problem with shrinkage. So basically what you are saying is; all celluloid knives will need to be re handled at sometime? Thanks.
Luckypaul777
Not necessarily at a near term date, long term I think EVERY celluloid will be replaced but that could be longer than I live. I do have some knives made in 2005 that have outgassed
ALREADY. I removed the scales to protect the backsprings, liners and blades. When they break down that fast, THAT's when I worry about metal corrosion and metal fatigue. Thank goodness
I bought them for the very purpose to customize. Yet, I have a friend that has some real nice old knives that date into the
1890's and they are just fine. BUT, I look at a knife with bad celluloid handles as a rejuvination project, I have a few RARE Knives that include a 1 of 6, 1 of 4, 1 of 9 from the early 1980's that are in sorry shape that are amongest the many project knives I have going. I bought them in this condition to restore. About the only thing I will keep is the blades.

or

The backsprings have rusted and cracked, so I will make a pair of those (so my backspring strength is the same on each) and the liners are badly pitted. I think a healthy outlook is what can I do to customize this knife to save it and maybe add value, WITHOUT making it look like a similar knife (counterfeit). On one I could just put stag handles and pocket a few hunder - WHO's to know - WELL ME for ONE and I refuse to do so and have turned down work. On those half dozen they are RARE Bulldogs worth saving almost all have steel liners (rare) and I will restore to as near original as possible.
Instead of celluloid I have researched some polyester materials that look and feel identical, yet they will be stable forever.
Also some acryllics that are very nice. I will most certainly stamp all 3 liners including the center liner. If I make a blade HUKK will be on the tang.
On the other hand I have been selling a mix of celluloids going back to 1982 or 1983 and they are pretty darn tight for their age. I list any shrinkage if there is any and I wil not sell a knife that is outgassing, I would rehandle it as close to the original as possible. I also stamp my last name inside the liner if I restore a knife. Sorry, I don't wish to add to the list of counerfeit knives. I do have some counterfeit knives that need new handles, I was thiking of Corprolite as a handle material - 60 to 100 million year old fossilized Dinosauer Dung. Saw a 25 pounder on eBay a while back
I'm of the opinion that if a knife is 25 years old and has nice tight celluloid it is most likely to stay that way for a long time. On the other hand I have some that have shrunk and discolored on a 2005 knife. That I suspect will outgas rapidly and etch holes into the steel. Celluloid is Nitro-Cellulose or a form of and I believe it breaks down into Nitric Acid in the gaseous form is EXTREMELY corrosive and will eat & corrode metal in no time.
Here is an article about celluloid breakdown and has a link to an article from the Oregon Knife Club.
http://www.balisongcollector.com/celluloid.html
Here is another good link:
http://en.wikipedia.org/wiki/Celluloid From the last article you can see that celluloid is volitle and even explosive in manufacture.