Picking

[Rockytime]

I finished cutting this from 1/4" Russian Baltic Birch. I mounted the pattern using a NEW roll of Duck shelf liner. I place the liner on the wood and burnish the shelf liner to insure that it does not lift before it should. I spray the pattern with adhesive and mount it on the shelf liner. Lifting the pattern when finished cutting the shelf liner pulled up a ton of small splinters. I have never had this happen before. I've always used the same brand liner and have always burnished the shelf liner. I also was using the same BB as before. This happen to anyone else?

[dgman]

Les, did you sand the BB beforehand? I always sand my BB to 320 grit before I apply the pattern, however I never apply tape or shelf liner under the pattern. A spritz of mineral spirits takes the pattern right off.

[teachnlearn]

I suspect you have a batch of wood with this defect. Manufacturing is a balancing act of keep everything running 100 percent. Adhesive runs low. Pressure to adjust, sensors fail or are dirty, heat fluctuates. If you have any left from a sheet, do a simple pattern mount, cut and lift and see if you have the same thing. If it happens, either throw out or return. Anything now a days is complex enough that there are going to be rejects that get by inspection. RJF

[kmmcrafts]

I get this from time to time... I also always sand the ply first.. and started doing so because of this exact thing... I found that ply that sits around for a period of time will do this.. I suspect it is because it has absorbed moisture and a very thin layer of the outer part of the wood seems to lift easier... sanding it has helped a lot with this.. and I haven't had as much of an issue since I started sanding it first.. but once in a while I still get that stubborn piece.. If I catch it starting to do this.. I'll set it out in the sun to warm up or use a hair drier or heat gun and then it usually helps too.. 

[Karl S]

I use a light spray of clear shellac, then lightly sand the surface, and haven't noticed this problem a couple of extra steps bt it pays off in the end.

[Rockytime]

Great suggestions. I did not sand first. That sounds like the problem. The light coat of shellac sounds like a good idea. 

[Tomanydogs]

I have also had this happen. But then I also started sanding before cutting and so far problem solved. 

[FrankEV]

Yes the answer is to sand before applying the shelf liner.   I've forgotten to sand and get the same results.  I actuately sand using 600 grit paper to get a very smooth surface.  And, BTW, don't forget to remove the sanding dust from the panel before applying the liner.  if you don't then it will not adhear very well and will lift.  

I use the clear shelf liner from Walmart and never have a problem with it lifting from the panel. I do rub it on well but don't try to really burnish it on.  

I have more problem with the spray adheasive releasing the pattern paper from the liner during cutting small/tight areas. 

One other suggestion is to remove the pattern and liner in the direction of the grain when possible.  Pulling it off cross grain can cause the stringy surface to lift also. 

And, one more thing.  Is the Duck Shelf Liner noted as "repositional".  I would not use liner that cannot be repositioned.  The adheasive grabs to strongly.

Edited September 25, 2020 by FrankEV

[Foxfold]

I cheat and spray glue directly onto pattern and fix onto wood and then wipe white spirit over it and it falls off. 

[NC Scroller]

I have looked close, magnifier close, and even presanded plywood will get some lift off with tape or shelf liner.  Sanding does help a lot but it is not 100%.  It really depends on what you find acceptable.  I am another one who 90% of the time mounts the pattern directly on the wood and used MS to remove it.

[Jim McDonald]

Les,

I get this from time to time with blue tape. Varies in severity and I think sometimes humidity is a factor.

Doesn't matter how tight I sand or what.

[Rockytime]

5 hours ago, FrankEV said:

Yes the answer is to sand before applying the shelf liner.   I've forgotten to sand and get the same results.  I actuately sand using 600 grit paper to get a very smooth surface.  And, BTW, don't forget to remove the sanding dust from the panel before applying the liner.  if you don't then it will not adhear very well and will lift.  

I use the clear shelf liner from Walmart and never have a problem with it lifting from the panel. I do rub it on well but don't try to really burnish it on.  

I have more problem with the spray adheasive releasing the pattern paper from the liner during cutting small/tight areas. 

One other suggestion is to remove the pattern and liner in the direction of the grain when possible.  Pulling it off cross grain can cause the stringy surface to lift also. 

And, one more thing.  Is the Duck Shelf Liner noted as "repositional".  I would not use liner that cannot be repositioned.  The adheasive grabs to strongly.

I had not thought about repositional. I no longer have the wrapper so I can't tell. I'll check on Amazon for a description. Good point!

[Rockytime]

Cheer up Ray. Everything is OK!

[cashew]

I get this every now and then -- not as bad as that -- but I use painters blue tape most of the time -- I have heard of another idea that I may try soon -- mirror image the pattern and apply to the bottom instead -- then the top gets nothing lifted  -- but I also sand mine to 220 before taping

[Rockytime]

1 hour ago, cashew said:

I get this every now and then -- not as bad as that -- but I use painters blue tape most of the time -- I have heard of another idea that I may try soon -- mirror image the pattern and apply to the bottom instead -- then the top gets nothing lifted  -- but I also sand mine to 220 before taping

I think sanding will alleviate some of the problem.

[wombatie]

The bamboo that I use always looks like that when I take the pattern off, I just hit it with the orbital sanders and they are gone.

Marg

[teachnlearn]

17 hours ago, wombatie said:

The bamboo that I use always looks like that when I take the pattern off, I just hit it with the orbital sanders and they are gone.

Marg

Bamboos are  evergreen. perennial flowering plants in the grass family. The 'wood' is going to have different characteristics compared to the what we call wood from trees. Bamboo cutting boards are very tough and have great strength. Bamboo  flooring is also a tough surface and it grows so fast it can be harvested faster then traditional trees. Its not exactly wood in a sense. RJF

[Norm Fengstad]

i seldom use shelf liner anymore because of the wood fibre lifting on removal. I think it is the quality of the BB that our lumber yard is getting now.. Wood spirits work fine for pattern release or a heat gun. thanks for the tip on shellac. Bamboo ply hasn't been available where I live would like to try it

[OzarkSawdust]

I switched from blue tape to clear shelf liner because of that. And I always sand before. I also have been using full sheet shipping labels, print pattern on the label, peal & stick to liner done! No more lift and no mess. I think Kevin put me on to that trick late last year. I also use a 4" squeegee that has felt over one side. I think body shops use these to put on wraps and stripes, works great for liner and patterns, Amazon.  

I haven't heard the Shellac trick before, may have to try it.

Edited September 27, 2020 by OzarkSawdust