I need a laminate board that is 68x180 cm, with the back and both short sides against the wall. Since the depth will be larger than standard, it will probably need to be custom ordered from IKEA. (The depth is necessary to cover a washing machine with pipes behind it.)
The tricky part is that one corner is slightly more than ninety degrees and the other is slightly less, so the board needs to be slightly shaped like a parallelogram, otherwise, there will be gaps of up to 8-9 mm on the short sides and that seems too large to just try to cover with a silicone strip. I suspect it's not possible to order such a shape and even if it is, it's difficult to measure exact dimensions in advance. (The wall is slightly uneven and the board not only needs to fit its final place, it also needs to fit as it’s being slid into place.)
So it feels like I will need to order a board that is a bit too long and then trim the ends a bit. Circular saw + tape seems to be the advice in various other threads. How high is the risk of chips in the laminate? I will probably need to fine-tune a few millimeters here and there as well. Does it work to run the edge with a router (or hand router...I've never understood what the correct term is) and carbide cutter to get a good edge on the laminate?
The tricky part is that one corner is slightly more than ninety degrees and the other is slightly less, so the board needs to be slightly shaped like a parallelogram, otherwise, there will be gaps of up to 8-9 mm on the short sides and that seems too large to just try to cover with a silicone strip. I suspect it's not possible to order such a shape and even if it is, it's difficult to measure exact dimensions in advance. (The wall is slightly uneven and the board not only needs to fit its final place, it also needs to fit as it’s being slid into place.)
So it feels like I will need to order a board that is a bit too long and then trim the ends a bit. Circular saw + tape seems to be the advice in various other threads. How high is the risk of chips in the laminate? I will probably need to fine-tune a few millimeters here and there as well. Does it work to run the edge with a router (or hand router...I've never understood what the correct term is) and carbide cutter to get a good edge on the laminate?
Start by making a template from an MDF board to see how the final one will look, which can also be in place while waiting for the custom-sized one. If you have a template, you can manage with a cut, a plunge saw on a rail from above, or a circular saw against a guide from below, at each end if it’s not possible to order with the correct angles from the start.
If you have a Dremel (or similar), place a level or something else long and straight and cut through the laminate first, then cut slightly outside the same groove with a plunge saw/circular saw so it works without "fraying" the laminate. A regular file usually works fairly well to sand down a bit if the wall is uneven. Just pull the file downwards all the time...
The record is now ordered. As expected, it wasn't possible to order with small angle deviations. (The smallest skewed cut measurement they could enter into their program was 55mm, I believe.) So, I had to add an extra dm in length, allowing me to start with a couple of test cuts.