I've been a pro cabinet maker for a couple of years now and I've got a repeat customer that wants me to build some matching office furniture they already have. (I did their house cabinets). 99% of my work is with plywood or lumber, not melamine or laminated panels. I have to build (7) 60" computer desks, with 2 DBs for each one.
The material is 1" panolam with 3mm edgebanding. I was planning to use a solvent based contact cement and brush it on, apply the 3mm PVC edgband and trim with a handheld router with a small round-over bit to match the other stuff.
My questions are:
1. Is this the best way without a edgebander?
2. Will the handheld router method work, or just cause grief?
3. Do I need to file or buff the 3mm edge after I trim it?
4. If I have to buff, buff with what?
Any other advice is greatly appreciated.
From contributor H:
The solvent based contact will work fine and a 3/16" round-over bit is fine. Use some oil or thinner with some very fine steel wool or a buffer wheel on a drill press to polish.
By far the easiest way to do this is to sub this out to someone with an edgebander. To do 3mm on a machine you need a scraper and a buffer. The scraper will remove the knife marks left by the trimmers, and the buffer will polish out the edge. If you are doing a dark color, you would benefit from a re-generator - a heater at the end that will bring the color back. While Harold recommends a 3/16" r, 1/8" (3mm) is most common. I have tried to buff with a buffer, but again, mixed results.
Can 3mm PVC be applied by hand, yes. But the results will not compare to an edgebander. PVC is very stiff (unless you get the kind for contour edgebanding - another story). It has been coiled up, and retains its memory. You will have to fight this. I tried to warm this up on a Texas parking lot, and it still was fighting me. An edgebander has a pressure roller(s) that apply an incredible amount of pressure to the edge, which is difficult to reproduce by hand.
There is a reason these banders are so expensive. Because the do a much better job than we can do by hand. Again, try it and see if you are satisfied.
(A caution is in order here. If you get the 3mm too hot, it will start to bubble.) Go back and forth applying the pressure until the 3mm cools off and gets hard again. If you stop rolling before it cools, it has been my experience that it will come loose. Also, I have never polished 3mm after routering with and kind of abrasive.
Instead I use Seamfil solvent. It has to be Seamfil solvent, others, like Wilsonart 110, will not polish the edges. I am not a chemist, but Seamfil solvent will actually dissolve pvc whereas the other solvents I have tried do not. I would think that if you used steel wool or something similar, it would eave a dull finish. The Seamfil method leaves a very shiny edge.