Paper laminate layers

[Matthew Ferriter]

I've seen some related posts about using colored construction paper as laminate layers in turning projects and most seemed negative especially regarding the ultimate strength.

There was an 8-minute segment on NHK World from 2019 that describes a company in Japan doing this (

View: https://www.youtube.com/watch?v=rvft2Y6yMKs
).

Just wondering if anyone had revisited the idea. Seems like if the paper is well soaked with adhesive, then the strength would be dependent more on the adhesive.

I've bought some Spectraply and FrogBlanks, but would like to mix my own colors quickly and more cheaply.

 

[hockenbery]

Having turned quite a few split turnings where paper is glued between the joint and split with a chisel.
The paper pulls apart in the middle leaving paper glued to each wood face- standard gluing & clamping does not penetrate the paper.

Not sure how you would get the glue to penetrate the paper. And unless you can the turnings will come apart.
The small rock shapes in the cover phot show the wood glued across the laminated layers that would decrease the chances of splitting.

Wood Veneers can be glued in to get the effect you want as well as thin pieces of wood.

 

[Mark Jundanian]

What Al said.

 

[hockenbery]

A couple of turners came to mind who turn glued up paper and cardboard.

Kailee Bosch - see the American woodturner February 2019. She turns paper glued together under a hydraulic press.
many of the pieces are laminated wood and paper.
check out the bowls part paper part wood. so it can be done.....


jason Schneider - he turns cardboard glued up well as making furniture.

https://kaileebosch.com/wp-content/...le_LookingForwardKaileeBosch_February2019.pdf

 

[john lucas]

I do a lot of paper joints and did an experiment one time where i tried a whole bunch of different papers to see what was the weakest and strongest. Colored construction paper was one of the weakest. Works well if there is large area glued because it does split really easily when your done. I would be leary of using it for anything that needs to last.

 

[Ed Davidson]

Like Al said...as an alternative to paper or cardboard, try thin wood veneers. They come is several colors and glue-up very well: https://www.woodturnerscatalog.com/p/70/5370/colorwood-Veneer-Pack-6-Pack?term=veneer&term=veneer

 

[robo hippy]

Hmm, interesting concept, but I think they have a lot of work to do yet. The idea that the paper layers absorb the glue and expand, some thing like 20 to 30% implies that the material isn't structural, which is inherent weakness. There are a number of colored paper pulp products available, and they are sturdy, and can be used for kitchen counter tops. With some of the 'stabilizing' processes available, and a proper glue, if the paper layers are infused so the resin is the strong part, it might be a better product. I do like the idea, and coloring the paper would be easier than coloring wood.

Ed, is that yo yo made from 'color ply'? I got some of that many years ago. Very labor intensive to make...

robo hippy

 

[Ed Davidson]

Yes, the yo-yo is made from Swiss Pear and ColorPly, with a red wood veneer separating the two. Italian ColorPly is no longer made, but there is a vendor on eBay who has a pretty large stash for sale. Let me know if you'd like a link.

 

[Mike Zip Hamilton]

On the stones, end grain glued to side grain is not a very strong joint.

 

[robo hippy]

Ed, do you turn your own tips? I got some rounds of Delrin for mine. I have had trouble getting the tops to spin with the traditional side arm throw, but they all seem to work with an underhand throw, a technique used in China.

Also, is there any schematic for dimensions and proportions? They seem to vary a lot...

robo hippy

 

[Ed Davidson]

Yes, I turn a lot of top points from 1/2" and 1" diameter delrin rod. The process I use is to turn a 3/8" dowel about 1/2" long on the end of a 1.25" to 1.5" length of rod. Then drill a 3/8" hole in the almost finished top, while its still on the lathe. Next, epoxy the delrin rod dowel end into the top, and turn the point to its final shape. That way, the point will always be perfectly aligned with the top's center-line.

The shape of my delrin points has evolved over the years, but I think the best, and most popular shapes are like the machined and cast ones shown below. However, I do worry a bit over these metal point's neck being too thin to model in delrin, thinking that the softer plastic might snap in two with a hard floor hit.

 

[Ed Davidson]

There's a 15% off sale (checkout code = NICK) at my favorite skill-toy retailer. And they have factory made plastic spintop points in stock: https://www.yoyosam.com/products/yo...pin-top-tip-single-tip?variant=31141661605999