Lenox Gold Utility Knife - supplied blades (Lenox Edge) vs replacement blades

I intended to post this as a tool reviews, but it is not a complete tool reviews in the real sense. I just wanted to share some infos, and bring an issue to your attention so if you have knoledge of it, share with me and also others who may keen to know.

To help you all understand better, here are the pictures : the knife and the two blades
1. The knife and two blades

2. The two different blades

I bought a utility knife in Sep 2007 named SSFK1 (Lenox Gold Fixed Knife) c/w 3 supplied blades namely LENOX EDGE – Patent Pending. For the replacement blades, I also bought a pack of 50 blades namely Lenox 50D Titanium Edge Gold Blade and written on the blade it self as LENOX bimetal

Since that purchase I only used the supplied blades one for cutting veneer and also 1/8” plywood sheets. I agree that this is very sharp blade, cuts deeper and lasts longer than any other blades I have. It cuts through the 1/8” plywood sheet (accross the grain) just with 3 strokes.

For the current project, I have alot of 1/8” ply and veneer to cut, so started using the replacement blade. To my surprise, it does not perform as good as the 3 blades supplied with the purchase of Lenox SSFK1 knife. Though it is sharper than other blades I have (I’d better not to mention the brand name) it dulls faster than the blade originally supplied with the purchase of the kniife. Both are titanium coated blades. The only different that I can see is the width of the coatings, the LENOX EDGE – Patent Pending has wider coating than the LENOX bimetal.

Questions : 1) What make both blades’ performance are different?

2) Do they have LENOX EDGE – Patent Pending blades in the market? Where can I buy?

3) Do you think the product info shown by the retailer/vendor is not sufficient (if not misleading)

Thank you for reading this post and sharing any info on this matter with me.

-- masrol, kuala lumpur, MY.