Comment on ribbed plastic anchor in brick not holding -- what screw diameter do I need?
diyrebel@lemmy.dbzer0.com 2 days agoThis shows ribbed plastic as suitable for masonry.
The load is a bicycle. The bike is probably around 15kg. It’s at a 45° angle so the load would be a little more than half the weight (assuming it’s the cosine of 45°, not sure), plus the rack… all of which is well supported by cabinet hooks that take the sheer load. So the anchor in question is just holding the 45° angle of it all.
The metal anchors you show would take on much more load. I’m not sure if I need them. How removable are they?
fondue@lemmy.world 2 days ago
It is a sleeve expansion bolt, sleeve is designed to blow out effectively into the material as the bolt tightens, so I think in general these are somewhat destructive, permanent fixtures. II think most of the time to fully remove requires a re-drill with a larger bit, so you could re-drill and then patch/fill. They can withstand crazy loads/force. Overkill for a bike, but would def work as a permanent solution - not what I would go for.
Sure you want to keep hat nice floating effect, minimal aesthetic. Those plastic insert sleeves should be fine if the hole is drilled precisely. You should blow out the bore hole to remove debris. You could glue the insert into the masonry, let that fully cure, and then drive the screws to get better expansion. Screws would be removable, but the plastic sleeve wouldn’t be. Good luck.