After installation, cover the gap with acrylic or urethane caulk. Below 60 degrees, leave a 1/8-in. The plastic at the cut line will "heal" itself, flowing into the scratches made by the saw and finishing up with a high-gloss surface if done well. However, if you don’t, stick with 45 degree angles. Leaving the trim longer than you need, for instance, means you can reduce the trim to length later, but you can't fix a piece that has been cut too short. There are many ways to go about rigging a hot knife, the simplest being to attach an xacto knife blade to a soldering iron. Pros use flame polishing regularly. Since you can cut plexiglass and acrylic with power tools, you might be tempted to do the same to cut your plastic fluorescent light covers. Even though there are different materials of candle covers (plastic, paper, resin, etc) the process to trim them is really the same. Use a hammer to mash and flatten the drywall if necessary. Reply Upvote. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. They can be designed to resemble any material, including the grain of wood. gap for every 18 ft. of length. Do not stop drilling until you go through the other side of the plate. Drag this knife across a straight line on the plastic. Include your email address to get a message when this question is answered. You could do the entire window trim like this, laid out on the board. PVC lumber may be longer than wood lumber, and the board may bend or move during cutting without proper support. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. The peg will be visible (it is on my laptop stand), so want it to have a smooth finish. 92. Cutting a proper corner trim requires a moderate amount of mechanical knowledge and preparation. However, most walls do not form a perfect 90-degree angle, so you will notice gaps in the connection. Sure. All tip submissions are carefully reviewed before being published. FREE Delivery. Detail of shim under the molding. Then hang the scribe marked piece of plastic at the end of the table and use clamps to hold it steady. You can also use a utility knife or 180-grit sandpaper to gradually smooth out the rough edges. The plastic at the cut line will "heal" itself, flowing into the scratches made by the saw and finishing up with a high-gloss surface if done well. Hold the ruler firmly in place with your weaker hand. A saw is a good choice for cutting flat or thick pieces of plastic. I used an electric saw and my plastic rings did not crack in half. Making statements based on opinion; back them up with references or personal experience. Mark your desired cut line using a straight edge, then score the sheet of plastic with the utility knife, making several passes until you achieve a deep groove. You can also nail the boards in place for additional stability. 90. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/b\/be\/Cut-Corner-Trim-Step-1.jpg\/v4-460px-Cut-Corner-Trim-Step-1.jpg","bigUrl":"\/images\/thumb\/b\/be\/Cut-Corner-Trim-Step-1.jpg\/aid10368579-v4-728px-Cut-Corner-Trim-Step-1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"