Review on Carbide Pattern Template Straight Bearing by Bohyun Hansen

I used them to mill templates for my guitar assembly. Used for neck pockets, pickup cavities, electronics box and tremolo cavities. Durability seemed good in terms of cutting, but the factory finish was terrible. I put my first bit in my router, set the right gauge and turned it on only to loosen the jig bearing and endangered my router and I not only cut the cavity but cut part of my jig as well. I checked the other 3 and tightened the bearings as tight as I could only for another to pull back and put a notch in my electronics cavity and another jig. 2 stars for the price and durability would have been really good if it weren't for the poor workmanship. Buyers be careful. Oh I don't recommend it