New GenPro 3 owner here. Enjoying sharpening my knives and bought the 1/4" jaws for some thicker knives. I have a BuckMaster 184 from when I was in the 101st and it’s too thick for even the 1/4" jaws - fits in when they’re wide open but even at the lowest tension the tightening arm is a good 3" off the deck when it feels like if I force it something will bend/break. Is there an accessory or someway of being able to use my GP3 for thicker than 1/4"?
Welcome to the Wicked Edge Forum NewGen3P Owner. I have experienced situations when my jaws are sometimes very tight too. I have found that sometimes, not always, I can rotate the lever counter clockwise, usually so the lever arm is in a vertical position, (this lever position may depend on how the handle is orientated on the squared shaft, because it can be removed and shifted 1/4 turns and repositioned as needed for different clamping situations). I position the lever so the cam is all the way down, as low as it goes, (if I rotate the lever, just a little more to counter-clockwise or back to clock-wise, the cams starts to move up again). With the cam all-the-way-down, I can squeeze together both of the long legs of the vice jaws simultaneously spreading the jaws sometimes just a little farther apart to gain a little more gap space needed.
Thx MarcH! I can picture exactly what you’re talking about and if I rotated the lever a 1/4 turn for just that knife I think it will work. Sure would be nice to see that knife with a polished edge. 
You could try something like the attached. I use it for flexible knives but I’m sure it can open more than 1/4". You probably would want to do a slight bend on the top long edge of both sides to maximize sufficient clamping surface area. It cost me $8.99
There is no question the gen 3 is a nice holder. Personally I prefer the original vise design. It clamps well and will hold anything!
Is that an adapter you made or bought somewhere? If bought, can you please link to it?
Here’s a link to a thread you may find useful.
https://knife.wickededgeusa.com/forums/topic/down-dirty-laa-mod/
That’s awesome, thank you! I’ll be heading to HomeDepot tomorrow to find some parts I can use.