3 ms·
Last time I tried to use a Robertson screw from Home Depot in a heavy duty application (building an AC frame and decking), it cammed out and the square opening
by antisthenes 9y ago
Last time I tried to use a Robertson screw from Home Depot in a heavy duty application (building an AC frame and decking), it cammed out and the square opening in the screw literally became round. I tried compensating by applying more downward force, but eventually it was still camming out and the bit itself became a cylinder.
It maybe better, but if the manufacturing quality is garbage, it's just as useless as the other ones.
I've only been using torx screws from 2012 onward. Never cammed out once and I'm still using 5 year old bits (they work like new)
- ibdf 9y agoThanks for the feedback. I too switched to Robertson's but found no difference. It must be the quality of the screws and not the shape.
- vertexFarm 9y agoHuh. I've never had that happen once out of literally thousands of screws from all kinds of different sources, including HD. Should be impossible for it to cam because the walls of the cavity are perpendicular. There's no thrust force being generated. Maybe it was just a really bad batch?
- mindslight 9y agoI have some R2 stainless "decking" (read: general construction) screws, and a standard consumer cordless impact driver generates enough transient torque to actually deform the cavity. Which even then results in the bit being "sticky" to pull out. I would imagine after several use cycles, the drive would be completely stripped.
- deleted 9y ago[deleted]