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66 votes

How to block a window with plywood for big wall to project a movie?

I have had great success using a 4x8 foot sheet of white foam board. It is extremely light weight. I hung it from ceiling on strings attached to three binder clips or bull dog clips like show below. ...
Kris's user avatar
  • 4,555
51 votes
Accepted

Should I tilt my DIY self-standing bookshelf backwards to prevent it falling down?

Use Screws Anyway If it was me, I would quietly ignore "I am not allowed to secure it using screws in the wall." We are talking about a couple of screws here, which would leave ~ 1/4" ...
manassehkatz-Moving 2 Codidact's user avatar
29 votes
Accepted

How can I bend plywood around a stair riser?

Just about any type of plywood can be bent by cutting slots on the hidden side that leave both clearance for the bend and enough uncut wood on the front to support it. I once made some speaker ...
jwh20's user avatar
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28 votes
Accepted

Will adding another layer of plywood improve shed floor bouncing?

Normal plywood has the wood fibers in its outer plies oriented along the 8 ft length of the plywood. There exists specially marked plywood that defies this convention, but from your photo it's clear ...
popham's user avatar
  • 10.4k
19 votes

Should I tilt my DIY self-standing bookshelf backwards to prevent it falling down?

I haven't built anything into a recess like you describe so this is conjecture. If you're fitting it into a recess and it is encased on all 5 sides (ceiling, floor, left side, right side, back wall), ...
jmathew's user avatar
  • 291
19 votes

Should I discard all flooring in a package containing mold?

Contact the seller and tell them about the problem. They should send you a new package and take back the mouldy one.
Polygorial's user avatar
18 votes

How can I cut a rectangle out of a piece of plywood?

I've often done this using a jigsaw, with the bookcase face down, or before assembling it. I assumed you want sharp corners - jigsaws can cut fairly tight turns but not sharp. I wouldn't run the saw ...
Chris H's user avatar
  • 6,701
18 votes

Is 3/4" plywood sufficiently strong to mount an 85" television?

There are "three stud" TV mounts where the backing plate is wide enough that you can connect with at least two studs and then mount the TV exactly where you want, even if it isn't centered ...
jay613's user avatar
  • 40.4k
17 votes

Should I tilt my DIY self-standing bookshelf backwards to prevent it falling down?

It is impossible for the bookshelf to rotate forwards and crush anyone, child or not, the way you have drawn it. For it to fall on someone (who pulled on it, or climbed it) it would have to rotate ...
Nick Gammon's user avatar
17 votes

How can I bend plywood around a stair riser?

There are plywood products made for radius situations. Bendy plywood and Wacky Wood are a few names it goes by. Options are available from several manufacturers like Radius-bending Plywood or Flexi ...
Kris's user avatar
  • 4,555
16 votes

How can I shave a sheet of plywood into a wedge shim?

I know from hard experience that it's very challenging to get a flat outcome doing something like this. Your existing floor isn't flat or level, and you need to remedy both of those things. A simple ...
isherwood's user avatar
  • 140k
14 votes
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How to block a window with plywood for big wall to project a movie?

Cut a sheet of wood into the dimensions of your window. Screw in L brackets in the four corners of the wall where you want to put the wood. Then just like a picture frame you install four rotating ...
Bradley's user avatar
  • 164
14 votes
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Should I discard all flooring in a package containing mold?

Contact the seller to see what can be done with your time line in mind. If you cannot get replacement before some hard installation deadline, remediating what you have is certainly possible: use the ...
P2000's user avatar
  • 16k
13 votes

How can I bend plywood around a stair riser?

Take some 1/4 inch plywood, and, with a circular saw, cut vertical slices in the back side ~3/16 inch deep, every half or quarter inch or so in the area where the bend is. This may give you enough ...
SteveSh's user avatar
  • 6,912
13 votes

How can I cut a rectangle out of a piece of plywood?

The almost optimum tool for cutting a hole like this is the oscillating type saw. You can get these into a fairly tight spot and with control of the tool you can avoid damage to the wall or power ...
Michael Karas's user avatar
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12 votes
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Nail gun and curled nails

Even on a good day, brad nails can curl on you. Through your fingers, if you aren't careful. However, if you look closely at the pointy end of a strip of nails, you'll see that they're cut at an ...
Aloysius Defenestrate's user avatar
12 votes
Accepted

Is it normal to see light between the plywood on a roof deck?

There is actually a requirement that the plywood sheets are not tight against each other. The normal spacing is about 1/8 inch or the thickness of a nickel. Some installers use Plywood clips to keep ...
RMDman's user avatar
  • 32.2k
11 votes

How to block a window with plywood for big wall to project a movie?

If you're not too attached to your current design, consider getting a pull-down projector screen (example). They hide away almost completely when not in use, and you can install it without ...
bta's user avatar
  • 1,989
10 votes

Plywood or MDF for workbench?

One factor to consider: If there is any risk that the work area becomes damp, I recommend avoiding MDF (unless it is thoroughly sealed) -- it swells and warps like crazy. I have recently suffered this ...
Telescope2334's user avatar
10 votes

Is 3/4" plywood sufficiently strong to mount an 85" television?

Yes. 3/4" plywood is very strong, and if you use a sheet of sufficient size will provide very good support. Assuming 16" stud centers I suggest about 52"w by 16"h. This will give ...
isherwood's user avatar
  • 140k
8 votes
Accepted

Is 3/4" OSB a better soundproofing material than 5/8" drywall?

3/4” OSB board is better than 5/8” gypsum board. Sound control is measured in STC ratings (sound transmission coefficient). Here’s a website that tests various materials: https://www....
Lee Sam's user avatar
  • 23.3k
8 votes

How would you protect a plywood container from moisture and abrasion?

The usual approach is a couple coats of polyurethane varnish. I'd sand it a bit to clean it up and give it a coat on all exposed surfaces. Steel wool between coats. It'll be apparent when you've ...
isherwood's user avatar
  • 140k
8 votes
Accepted

What are the actual dimensions of a 4x8' subfloor plywood panel

Looking for "sanded" plywood and check the specification for the panel you are looking to purchase. This one is a 4x8x3/4 from Menards. https://www.menards.com/main/building-materials/panel-...
r13's user avatar
  • 3,392
7 votes
Accepted

How to secure plywood wall panels with hidden fixings

If you use 3/4" plywood and not a veneered MDF you could drill a small pilot hole for trim head screws. It will leave a hole about 3/16" in diameter that will need to be filled after the panels are ...
Jack's user avatar
  • 35.6k
7 votes

Should I tilt my DIY self-standing bookshelf backwards to prevent it falling down?

In order for a bookshelf to topple forwards, it is necessary to have some force applied to the structure. Typically, that force is gravity. Gravity will not usually push a bookshelf out of plumb, ...
fred_dot_u's user avatar
7 votes

Contact surface between subfloor and joists

Just add (nail, screw, and/or glue) additional framing material to the side face of the joist to provide more bearing area for the subfloor.
Ecnerwal's user avatar
  • 220k
7 votes

How can I bend plywood around a stair riser?

The problem you have here is you are trying to solve an aesthetics issue. You could tackle this 10 different ways but what can you make look good? This could be done with just plaster or some ...
DMoore's user avatar
  • 49.2k
7 votes

How can I shave a sheet of plywood into a wedge shim?

Build it up, don't shave it down. Depending on how smooth and level you want to get it, do some or all of the following steps: Set yourself up with a temporary reference for level down each side of ...
KMJ's user avatar
  • 12k
6 votes
Accepted

What lag bolts to use when mounting 65" TV to drywall using plywood?

The plywood plan sounds fine. The lag bolts through the plywood into the studs need to be long enough to go through the plywood, through the drywall, and engage about 1-1/4" to 1-1/2" into the stud ...
Harper - Reinstate Monica's user avatar
6 votes

Are snap toggles a good way to mount a TV to metal studs?

Use a different bracket An articulating arm on a single stud is a bad idea. Maybe if it's mounted very well in a wood stud with four 1/4 inch lag screws, maybe. Definitely not on a metal stud and ...
jay613's user avatar
  • 40.4k

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