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stack laminated turning question

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Forum topic by kmetzger posted 55 days ago 421 views 0 times favorited 3 replies Add to Favorites Watch
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kmetzger

68 posts in 413 days


55 days ago

I’m looking into stack laminated turnings. Here’s a useful introduction: https://www.youtube.com/watch?v=K43v_ABjQIU
But what I’m wondering is whether grain direction is important when gluing boards together. I know that normally boards should not be glued cross-grain, but I can’t find anything discussing this topic.

-- Kim, Ajijic, Mexico, http://tinyurl.com/7w5fm25


3 replies so far

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TheDane

3647 posts in 2259 days


#1 posted 55 days ago

Kim—- This is just a WAG, but I would think gluing with or across the grain wouldn’t be much of a problem depending on how thin you are going to make the walls. If you are not going to hollow (the guy in the video did not) then it might be an issue. Wood moves and you can’t stop it, but the more you remove from the inside of the object, the less movement there may be. Again, just an guess on my part.

-- Gerry -- "I don't plan to ever really grow up ... I'm just going to learn how to act in public!"

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hairy

1988 posts in 2128 days


#2 posted 55 days ago

Maybe this will help.

http://www.woodturningonline.com/Turning/Turning_projects.php?catid=60

-- what a long, strange trip it's been...

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Wildwood

950 posts in 730 days


#3 posted 54 days ago

All the glue ups in the video are face grain to face grain hence laminated vase. When he turns that vase is turning both end and side grain at the same time.

If he orientated the top piece where grain running up & down, would need to turn a tenon on that top piece and drill a hole in base to accept that tenon. End grain to side grain glue up joints not very strong.

If he were making a segmented vase would have a combination of face and end grain glue ups. Strenght comes from the side to side gain joints.

Whenever turn a multi piece spindles or hollow forms always use tenon & hole glue ups for strength, always turn elements to hide or mask glue joints.

-- Bill

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