How to Cut Plexiglas
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- Опубликовано: 6 сен 2010
- Watch more Great Craft Ideas videos: www.howcast.com/videos/316950-...
Commonly used as an inexpensive, lightweight substitute for glass, this acrylic plastic requires patience when cutting because of its proclivity to chip and melt.
Step 1: Measure the shape
Measure your shape with a tape measure or ruler and mark it with a pencil. New Plexiglas sheets are typically covered with protective paper. Try to leave as much paper as possible on the Plexiglas to minimize scratching.
Step 2: Prepare to cut the Plexiglas
Put on your safety goggles and gloves. Use the scoring knife to lightly score along your cutting lines.
Tip
Plexiglas shards can cut just like glass. Be sure to wear the proper shoes and sweep up the work area when finished cutting.
Step 3: Score and break thin pieces
Score the Plexiglas where you want it to break, and then line the sheet up along the edge of a table with the scored side facing up. Sharply bend the Plexiglas down and snap it along the scored line.
Step 4: Cut with a saw
Use a table saw or band saw when cutting through Plexiglas that’s more than ¼-inch thick. Clamp down the Plexiglas to prevent slippage.
Tip
Consider using special Plexiglas-cutting blades for your table, circular, or band saw, available at your local hardware store. The blades have many fine teeth and will minimize chipping, cracking, and melting.
Step 5: Sand the edges
Sand the edges of your Plexiglas when you're finished cutting. Use fine grain sandpaper for a smooth finish.
Did You Know?
World War II warplanes were outfitted with Plexiglas cockpits, windows, and gunner turrets. 
Хобби
Clear, short, right to the point. Awesome job!
Just did this to replace a sliding window in the back of my 77 F-250. Clamps are crucial to getting that clean break. If you're using a boxcutter like I was, do at least three passes along your cutting line, and press down like He-Man on that little blade. As well, when it does snap clean it's quite a loud pop. I thought I burst my eardrum the first time.
**he** ; wear protective clothes, plexiglass is just as sharp as real glass
**she** ; breakes the plate with her unprotected lower arms and is hospitalised :-)
Great info. I will be sure to wear headphones and use a razor with a fresh blade and then go over the cut knife too. Thanks!!
Note to viewers: If you're going to cut plexiglass with the scoring method, make sure you follow the video correctly, WEAR SAFETY GLASSES. Because, if you don't score deep enough, you will wind up with an unclean break, and small shards of plastic sheet flying at your person.
Cut the basic shape of each blade in square form and use a dremel tool and sandpaper to sharpen the edges...
World War II planes? They still use Plexi-Glass for airplane and helicopter windows. Lexan is the more common acrylic actually.
thumbs up if you agree that you have watched a lot of these and never tried one
wow
@DScordlain Ive tried em' just never had the materials for it
pow right in the kisser!
Ah I didnt know the scoring thing wouldn't work if it was thicker. That's why it broke :D I didnt'have internet when i tried this before. Now I know. I was trying to tell my neighbor you can do this for a broken window instead of paying $15 for a small window.
how could you try them with out having the materials to do them?
I use a fine tooth blade, put on circular saw, backwards, to cut plastic
I am making an Energy sword from Halo, and I need lots of small curves. How do I do that?
How thick is the plexiglass used here..?
can you use just any knife????
@tiktian plexiglass is the brand name of methacrylate ... polycarbonate is all another matter.
@jtdizzle13
that is until you realize that plexiglas is a brand name of polycarbonate just like lucite and lexan....
how to make a plexiglass sheet from PMMA crystals?
what if you want to cut out a circle?
@yoyodominos what are you talking about?
very helpful. how do I find large sections of plexiglas at discount prices?
Ace hardware has some. We went there for my mark rober class project.
So... you can just use the scoring method then... the rest of the video shows an alternative method to the scoring method?
Surely a variable-speed jigsaw with a fine-tooth blades works WAAAYYYY better than a circular saw?
-From a craftswoman.
LanaMuckraker it does not. I just tried a 21 tpi blade on slow and high speed and it chipped the plexiglass really bad
cause i've attempted the first step, meaning i've tried it, but never had the materials for the rest of the steps.
what if i want to cut curves?
use a jigsaw - a saw with vertical blade which is pushed in up and down direction
For holes first make a hole with usual drill than continue with jigsaw...
I tried that but it kept cracking.
I need to make a mask for the n2019CoV, does anyone know how to bend it so I can make a face shield?
Ricardo Bautista Garcia
Try ordering a motorcycle face shield istead
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@slayer7160 epic fail!
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goldberg destroyed this glass with a kick is that possible ?
easily
it's not hard, you just need a ninja and a plexiglas piece
The fact tip was .... WWII planes ..... polycarbonate wasnt invented till 1953 by General Electric. The facts in this video are correct , plexiglass was used in WW2 planes.
First