kcasser said:
Glad I saw this thread...I think. I ordered a set of 486549 blades which in the Carvex brochure have the Carvex logo on them (S 75/4 FS five pack). I received a package with the same stock number, but they have the Trion logo on them. Are you saying these will get stuck in my new Carvex PSB 420 EBQ? I don't think I want to be scraping off the paint in the hopes that the blade will fit. I checked with my retailer and he said, "The FSG blades are the only ones whose thickness has changed for the carvex. The 486549 (FS)will work in either saw without problem." Do I need to be concerned? Thank you!
There is some confusion about what has and has not changed with various blades. The FS blade has not changed at all. It ("they" when you consider it comes in different lengths) are non-side-set teeth with a trapezoidal shank (also called conical grind) to provide kerf clearance.
The FSG blade was originally a side-set blade that also included the redundant trapezoidal shank. Because both of those features do the same thing, the trapezoidal shank was removed. This gives the shank a little more rigidity. There is nothing wrong with using either blade in either saw, with the very minor exception of the thickness of the paint on the older version.
The metal shank of both old and new FSG blades still comes from 14-gauge steel, which is 0.070" thick. This hasn't changed. What did change was keeping a closer tolerance on the thickness of the cosmetic paint covering the blade. That doesn't prevent you from using an older FSG blade in the Carvex, but it can cause the blade to not easily pop out with only the blade-ejection spring force. It doesn't impact the function of the tool. It is just a loss of convenience when ejecting a used blade.
This applies only to the FSG blade (
comes in 2 lengths, so sometimes the plural "blades" is used, which may be confusing). If you have existing inventory of old FSG blades, there is nothing wrong with using up that inventory with a Carvex. (However, the newer blades are stiffer.) You just have to be aware that sometimes (not always) the thicker paint may make the blade a little harder to eject from the blade holder.