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Forum topic by Dadzor posted 11-20-2019 07:20 PM 731 views 0 times favorited 32 replies Add to Favorites Watch
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Dadzor

66 posts in 3683 days


11-20-2019 07:20 PM

Hey, all. I have two questions I am hoping you can answer for me.

Why are wood biscuits cut along the grain instead of across the grain? Can I get biscuits that are cut perpendicular to the grain?

Thanks,

Matt

-- You don't have to burn books to destroy a culture; just get people to stop reading them. -- Ray Bradbury


32 replies so far

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JackDuren

544 posts in 1523 days


#1 posted 11-20-2019 08:14 PM

I’ve never notice it to make difference. I think the lamello have no grain and might be what you need…

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pottz

7076 posts in 1548 days


#2 posted 11-20-2019 08:20 PM

as jack shows they have no grain to speak of,there made of compressed beech wood so it doesn’t matter.sort of like plywood i believe.

-- sawdust the bigger the pile the bigger my smile-larry,so cal.

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Dadzor

66 posts in 3683 days


#3 posted 11-20-2019 08:31 PM

Jack and pottz, thanks for the info on the lamello. I will check it out.

-- You don't have to burn books to destroy a culture; just get people to stop reading them. -- Ray Bradbury

View Lazyman's profile

Lazyman

4195 posts in 1951 days


#4 posted 11-20-2019 10:47 PM

I think that they normally cut them at a 45° angle to the grain. You can see that at about 50 seconds into this video. I looked my porter cable biscuits and the grain also appears to be at 45°

Just curious. Why do you want them across the grain? If you are worried about moisture fluctuations, that should not be an issue.

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

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Dadzor

66 posts in 3683 days


#5 posted 11-20-2019 10:58 PM

Hey Lazyman,

My original question was, “Why are wood biscuits cut along the grain instead of across the grain?” Biscuits are very weak, and are best used for aligning and stabilizing boards for gluing, as you know.

I was just wondering whether they would be stronger if they were cut across the grain at 90 instead of 45. I wondered if I could get my hands on some to test my theory.

I am still looking. Thanks for the reply.

All the best.

Matt

-- You don't have to burn books to destroy a culture; just get people to stop reading them. -- Ray Bradbury

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pottz

7076 posts in 1548 days


#6 posted 11-20-2019 11:13 PM



I think that they normally cut them at a 45° angle to the grain. You can see that at about 50 seconds into this video. I looked my porter cable biscuits and the grain also appears to be at 45°

Just curious. Why do you want them across the grain? If you are worried about moisture fluctuations, that should not be an issue.

- Lazyman


cool video i see that they are cut across the grain at a 45 and not a ply type construction like i thought.that does seem the best way for maximum strength.i learn something new everyday here.

-- sawdust the bigger the pile the bigger my smile-larry,so cal.

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Lazyman

4195 posts in 1951 days


#7 posted 11-20-2019 11:17 PM

I just clamped one in a vise and commenced to whacking on it with a mallet. It took several pretty sharp blows to crack it, and when it did, it split along the diagonal grain. Even if that somehow happens after glue up, both sides would still be embedded in both sides of the slot. I would think that any advantage of a 90° would be minimal.

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

View therealSteveN's profile

therealSteveN

4330 posts in 1138 days


#8 posted 11-20-2019 11:26 PM

I was just wondering whether they would be stronger if they were cut across the grain at 90 instead of 45.

- Dadzor

Sounds like you aren’t buying it’s not a strength tool, rather an alignment one discussions? Compare it to the size of a dowel, or the Domino, it won’t matter what the orientation of that cheesy little wisp of wood is, it will still be an alignment tool.

-- Think safe, be safe

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Dadzor

66 posts in 3683 days


#9 posted 11-20-2019 11:27 PM



I would think that any advantage of a 90° would be minimal.

- Lazyman

Yeah, you’re probably right.

Thanks for the input.

-- You don't have to burn books to destroy a culture; just get people to stop reading them. -- Ray Bradbury

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Dadzor

66 posts in 3683 days


#10 posted 11-20-2019 11:30 PM

Sounds like you aren t buying it s not a strength tool, rather an alignment one discussions?

- therealSteveN
No, I get it. I was just wondering….

Thanks, Stephen.

-- You don't have to burn books to destroy a culture; just get people to stop reading them. -- Ray Bradbury

View Rick  Dennington's profile

Rick Dennington

6782 posts in 3758 days


#11 posted 11-21-2019 12:25 AM

I just watched the video on how the biscuits are made…..! Very interesting…..I sure didn’t know they were made that way…...Likw was said, you learn something everyday…..!! Thanks for posting.

-- " There's a better way.....find it"...... Thomas Edison.

View pottz's profile

pottz

7076 posts in 1548 days


#12 posted 11-21-2019 12:56 AM



I just clamped one in a vise and commenced to whacking on it with a mallet. It took several pretty sharp blows to crack it, and when it did, it split along the diagonal grain. Even if that somehow happens after glue up, both sides would still be embedded in both sides of the slot. I would think that any advantage of a 90° would be minimal.

- Lazyman


im not sure how much force is applied when those are punched out but id say it was a tiny bit more if you hit it with a hammer-lol.

-- sawdust the bigger the pile the bigger my smile-larry,so cal.

View Toller's profile

Toller

48 posts in 2163 days


#13 posted 11-21-2019 03:02 AM


Sounds like you aren t buying it s not a strength tool, rather an alignment one discussions? Compare it to the size of a dowel, or the Domino, it won t matter what the orientation of that cheesy little wisp of wood is, it will still be an alignment tool.

- therealSteveN

I sold my biscuit cutter 10 years ago… but….
If you make a joint and ONLY glue a couple biscuits, it is pretty strong.

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Lazyman

4195 posts in 1951 days


#14 posted 11-21-2019 04:14 AM

Interesting article about biscuit joiner including the grain direction.

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

View therealSteveN's profile

therealSteveN

4330 posts in 1138 days


#15 posted 11-21-2019 04:19 AM

Maybe I didn’t hold my tongue right, but back when I did have one them I never shared that experience about strength, but I was cheep and bought the PC one.

-- Think safe, be safe

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