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Microscopes 05-11-2019 04:51 PM

Best way to get a straight edge on a piece of ply
 
Home Depot ply tends to have not-perfectly square edges.

So I don't want to run it through the table saw, because the fence will mirror the imperfection on the next cut, right?

What's the best way to get a perfectly straight edge, so that when I make the rest of my cuts, everything is spot on?

Steve Neul 05-11-2019 05:07 PM

I don't believe I've ever seen plywood from anywhere that didn't have square edges. If the Home Depot plywood you are getting is all you can get you could make a straight edge and cut the parts with a hand held circular saw.

Scott410 05-11-2019 07:13 PM

You have to use your table saw. Put the best side against your fence and cut the imperfect side off, make those 2 sides parallel.

Sent from my SM-G930V using Tapatalk

Microscopes 05-11-2019 08:58 PM

Quote:

Originally Posted by Steve Neul (Post 2054583)
I don't believe I've ever seen plywood from anywhere that didn't have square edges. If the Home Depot plywood you are getting is all you can get you could make a straight edge and cut the parts with a hand held circular saw.

They’re close but not perfect.

Especially the “project panels”.

One end may be 4 ft wife and the other end 3 ft, 11 5/8”.

Small difference but still there.

woodnthings 05-11-2019 09:04 PM

I never heard of such a thing ....
 
They must be making their own "project panels" using their panel saw on the midnight shift. What else would explain the difference? You probably need to diagonal measure each panel before you buy it. At least check it with a drywall square....? :sad2:
You don't need "square" corners IF you can "make" them square after ripping to the correct width. Then, with a crosscut sled or a RAS set to 90 degrees, you can square off the widths. It's a PITA to hafta do that for sure, but there's not much else you CAN do.

Steve Neul 05-11-2019 09:13 PM

Quote:

Originally Posted by Microscopes (Post 2054605)
They’re close but not perfect.

Especially the “project panels”.

One end may be 4 ft wife and the other end 3 ft, 11 5/8”.

Small difference but still there.

OK, I've never considered purchasing the smaller panels. It's not the factories fault, it's someone that works for HD that is cutting them with a panel saw. I've only bought full 4x8 sheets. Those you use the sheets to square up a cabinet when assembling.

Actually for cutting on a panel saw 3/8" difference is a lot. They must be using no care at all cutting them.

GeorgeC 05-11-2019 09:23 PM

Quote:

Originally Posted by Microscopes (Post 2054605)
They’re close but not perfect.

Especially the “project panels”.

One end may be 4 ft wife and the other end 3 ft, 11 5/8”.

Small difference but still there.


What you just wrote has nothing to do with an edge being straight. It says that at least one of the four corners is not exactly square, but it is pretty close. The edges may be perfectly straight and still have this error.


George

FrankC 05-11-2019 10:10 PM

3/8" is pretty sloppy cutting, I would be talking to somebody at the store about that, around here you don't really save any money, you get a 1/4 of a sheet for 1/4 of the price, but it will fit in your car.

Microscopes 05-12-2019 08:55 PM

Quote:

Originally Posted by Steve Neul (Post 2054609)
Quote:

Originally Posted by Microscopes (Post 2054605)
They’re close but not perfect.

Especially the “project panels”.

One end may be 4 ft wife and the other end 3 ft, 11 5/8”.

Small difference but still there.

OK, I've never considered purchasing the smaller panels. It's not the factories fault, it's someone that works for HD that is cutting them with a panel saw. I've only bought full 4x8 sheets. Those you use the sheets to square up a cabinet when assembling.

Actually for cutting on a panel saw 3/8" difference is a lot. They must be using no care at all cutting them.

I guess I’ll go with the 4x8’s.

Next time I go, I’ll take a pic and post a few of them for you guys to see (I think you’ll get a laugh),

Microscopes 05-12-2019 08:56 PM

10 Attachment(s)
Quote:

Originally Posted by FrankC (Post 2054623)
around here you don't really save any money, you get a 1/4 of a sheet for 1/4 of the price, but it will fit in your car.

That’s correct.

I actually have a truck, but I prefer the smaller panels because I’m usually alone and carrying a 3/4” 4x8 by yourself isn’t a ton of fun.

Microscopes 05-12-2019 08:56 PM

Quote:

Originally Posted by GeorgeC (Post 2054617)
Quote:

Originally Posted by Microscopes (Post 2054605)
They’re close but not perfect.

Especially the “project panels”.

One end may be 4 ft wife and the other end 3 ft, 11 5/8”.

Small difference but still there.


What you just wrote has nothing to do with an edge being straight. It says that at least one of the four corners is not exactly square, but it is pretty close. The edges may be perfectly straight and still have this error.


George

Sorry for saying the wrong thing.

Microscopes 05-22-2019 02:58 PM

4 Attachment(s)
Just went today. Check out this MDF. I know it’s not a massive difference but it really screws my cuts up.

FrankC 05-22-2019 03:28 PM

Unless you need to use the entire panel just measure from the two factory edges remaining from the full sheet, never rely on a cut made at a lumberyard.


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