All Replies on Biscuits, Pocket Screws, T&G, or Other for Flat Surfaces?

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Biscuits, Pocket Screws, T&G, or Other for Flat Surfaces?

by MJClark
posted 10-15-2018 12:37 PM

16 replies so far

View LittleShaver's profile


540 posts in 1014 days

#1 posted 10-15-2018 12:40 PM


-- Sawdust Maker

View Robert's profile


3405 posts in 1875 days

#2 posted 10-15-2018 01:41 PM

Glue provides more then enough strength.

I generally don’t use anything, but sometimes it is necessary, for example a slightly bowed board that you can’t joint. In that case, dowels or Dominoes are the best option. You can also cut slots and use short splines (be sure to orient them 90° to grain direction of panel). Biscuits don’t work as well for this purpose IME.

-- Everything is a prototype thats why its one of a kind!!

View bondogaposis's profile


5414 posts in 2746 days

#3 posted 10-15-2018 01:44 PM

Just glue and cauls for alignment.

-- Bondo Gaposis

View CharlesA's profile


3383 posts in 2192 days

#4 posted 10-15-2018 02:01 PM

this is my method.


- LittleShaver

-- "Man is the only animal which devours his own, for I can apply no milder term to the general prey of the rich on the poor." ~Thomas Jefferson

View HokieKen's profile


9594 posts in 1533 days

#5 posted 10-15-2018 02:09 PM

Definitely glue. I use biscuits occasionally depending on what the piece is for but they are solely used for alignment and aren’t relied on for any bond strength.

-- Kenny, SW VA, Go Hokies!!!

View Gerald Thompson's profile

Gerald Thompson

1202 posts in 2629 days

#6 posted 10-15-2018 02:37 PM


-- Jerry

View Lazyman's profile


3429 posts in 1782 days

#7 posted 10-15-2018 02:55 PM

Biscuits are very easy and do help with alignment but you are right, they don’t add much strength. A plain glue joint is plenty strong anyway. IMO, the only thing a pocket screw might do is help apply a little more pressure during glue up if you don’t have enough clamps. I did used the once to join 2 relatively short pieces of laminated particle board because I didn’t think that would glue up very well. T&G or a spline will add more glue surface area and should improve alignment but you have to be more exact with cutting them. Any warpage will make that more difficult so are probably more trouble than they are worth. T&G is good for breadboard ends though.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

View johnstoneb's profile


3111 posts in 2567 days

#8 posted 10-15-2018 03:02 PM

Glue, sometimes biscuit to help with alignment even that is very rare.

-- Bruce, Boise, ID

View ArtMann's profile


1385 posts in 1210 days

#9 posted 10-15-2018 03:06 PM

If you can overcome the alignment problem, then glue alone is the best solution. For alignment purposes, I have used dowels and a precision jig as they are stronger and more accurate than biscuits.

View BroncoBrian's profile


875 posts in 2353 days

#10 posted 10-15-2018 04:36 PM


I love using Dominos. All you need is glue, hence the name glue-up. But the domino nearly guarantees that you will have a flat face each time. They fit snug and even. Even if your boards are not the same thickness (some reclaimed projects work out this way) you will have a flat face because the depth off the top face will be the same.

Or just glue.

-- A severed foot is the ultimate stocking stuffer.

View EarlS's profile


2802 posts in 2742 days

#11 posted 10-15-2018 04:51 PM

Glue and biscuits. I actually prefer the Gorilla PVC (foaming) glue over Titebond. Biscuits every 8 ” help keep everything aligned and flat, especially if you are gluing more than 2 boards together or long boards.

-- Earl "I'm a pessamist - generally that increases the chance that things will turn out better than expected"

View Jared_S's profile


196 posts in 354 days

#12 posted 10-16-2018 01:35 AM

Glue and cauls.

This was a nine board 133”x42” table top

View BroncoBrian's profile


875 posts in 2353 days

#13 posted 10-16-2018 01:42 AM

Jared, you left out 136 clamps.

-- A severed foot is the ultimate stocking stuffer.

View Jared_S's profile


196 posts in 354 days

#14 posted 10-16-2018 01:50 AM

Jared, you left out 136 clamps.

- BroncoBrian

Lol I use almost the same amount of clamps if I’m using biscuits, dominos or finger/glue joints.

View TheFridge's profile


10858 posts in 1880 days

#15 posted 10-16-2018 02:19 AM


- LittleShaver


I might use biscuits for a thick glue up but for 2’x2’ or less I just roll with it. I use painters tape for thin 3/8 or less stock maybe even small 1/2 thick panels.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View lumbering_on's profile


578 posts in 884 days

#16 posted 10-16-2018 02:20 AM

Glue and cauls, normally, but I use dowels if it’s a large glue up as I don’t have Jared’s setup. :(

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