I'm planning on mounting an oak DVD rack on my wall, 3 studs wide - about
36" assuming 18" centers. This is just guesswork for now so the numbers aren't that important. Anyway, so I'm going to hang a single shelf 36" oak DVD rack, assume it will be filled with DVD's. The plan is to mount it directly to the studs, but that's not something I can necessarily count on in case I move the rack in the future. So I'm wondering whether or not drywall will be able to hold that much weight if I use drywall anchors. I actually don't know how much it will weigh I'm guessing less than 50 lbs.
Well like I said the numbers aren't important, besides the stud spacing in my house isn't consistent enough to rely on. It'll all get measured out when I build the rack.
IMO molly toggles & molly bolts suck. They're a PITA to work with, I hatethem, never use them.
I think your weight estimate (< 50 lbs) is good. SO even if you only use three screws the withdrawl load on the center screw (worst case) is less than 25 lbs.
I would use plastic wall anchors, I know they're not all that strong but the loads in your situation are pretty low.
OR
use threaded drywall anchors (plastic or zinc); quick, easy, strong
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Mollys are overkill for you application; too much work & harder to remove & patch
Personally, I find most plastic wall anchors are made of cheap slippery plastic and easily slide out of drywall. Anchors that spread the load behind the drywall, I find best for taking weight.
I've never actually used a moly bolt. I can see how they'd be a bear to patch and use, but my experience with plastic anchors is pretty ugly. I can try what you have there, also perhaps may try those drywall toggles - they seem a bit more solid - but probably won't work as well if there's insulation behind the wall.
I know it's not a lot of weight per screw - I'm thinking 4 holes myself - so that's less than 15 lbs per hole
Hmm, that's an idea. May be able to incorporate it into the design too. That would also eliminate the need to put a hole in my nice oak boards too!
If you take care to drill the right size hole with a new bit, insert the insert flush with the wall, and use the right size screw in the insert (with enough penetration), they hold well. You have to go by the numbers, though, but if done right they are pretty sturdy.
You would actually use a new bit in plaster? Doesn't that dull bits faster than almost anything else?
I use the bits I paid 69 cents for 14 of them, and I don't think my hole is any different in diameter or smoothness than any other bit would make.
Comments?
Plastic wall anchors may be cheap, but that's because plastic is cheap and anchors are easy to make.
They may be slippery, but they have little teeth that imbed themselves in the plaster and the question is whether those teeth are sufficient and whether they loose their corners so easily that the anchors slide out. I don't think they do at low weights, but I've never weighed things or compared them with the promised capacity so I don't know.
I don't know why the OP is asking about the NEXT time he hangs this shelf, when he says that this time, he is putting the screws in studs.
I also don't know why it can't always be mounted on studs, since the screws don't have to go through at the ends of the rack. If the rack is 36 inches wide and 16" spacking, the left screw can go through the rack say 8 inches from the left end, the next screw aat 24 inches from the left end (and 12 from the right), and that is 16 inch spacing.
If there are holes from the previous mounting, one can put screws in those too, even if those screws don't hit the studs and might bear no weight.
One doesn't - can't - remove them if they have been used properly. All that is necessary is a swipe of spackle or DW compound over the slightly sunken collar/flange.
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