21-02-2018, 04:59 AM
As promised, here is my review of the Uniburr. It is brief as I spent the last couple of days insulating my garage after getting tired of cold hands and feet. I ordered the Uniburr Plus # 1816. I used it on a 5/8 hot dipped galvanized carriage bolt. Obviously not hardened steel. The specs say that it is good for grade 2, grade 5 and grade 8. Also stainless 300 Series. But not US Grade ASTM-A574. The literature says," Real men don't need instructions and as a result, many a young brave young Uniburr will die". You have to use this at a very slow speed. No reverse. And the harder the metal the more pressure is needed. On the carriage bolt it worked well. I will note that because of the angle of the cutter head, you will lose a half dozen threads, so that if your bunged threads are on a bolt that is barely long enough for the application, you may not have enough threads left to fix a nut. In that case, cleaning the threads with a die or thread file would be more advisable. Do I like it it? Yes. Will I use it again? Certainly. With fairly critical, as far as length is concerned, studs and bolts, I would probably clean up with a die.
Erich in Seattle
Erich in Seattle