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If you build this right I think you could safely park a motorcycle on top of it. And no, I'm not exaggerating. A (very large apparently!) TV and soundbar should not pose any risk whatsoever.
As already mentioned in the Comments 3/4" / 18mm birch ply is strong, assuming it is decent quality very very strong. And glue-and-screws construction is also a strong and reliable way of putting together plywood projects. So you're lining yourself up for success already.
In addition, in case you're not aware, the back can add a very significant strength component to cabinetry. By fixing firmly to a back panel (even a relatively thin one) you effectively lock the entire shape which prevents racking, barring the fasteners snapping, tearing free or ripping out chunks of plywood.
3/4" plywood is VERY strong. I have some on a shelf in my shed holding my turning wood, I used full 4'x8' sheets and I have several hundred pounds on it. no dipping. I also have some 1/2" plywood on 32" wide shelves and it does a pretty good job.
So yes. A top only 19" wide with even less support than you are planning would have no problems with a an 88 lbs TV. It should look pretty nice when you are done.
Hey all,
So I've recently gotten into woodworking and I just finished my first iteration of my workshop and think I'm ready to try some simple furniture.
This may be a stupid question, but I'm wondering if I should build a tv stand out of plywood or solid wood. I want to build it out of Ash wood, and ideally I'd like to use ash ply since I don't have a planer, but only if the cons of using plywood aren't too great.
What are the pros and cons of both and what would people recommend for a first project?
Thanks for all advice.