Senior Editor for Make: I get ridiculously excited seeing people make things. I just want to revel in the creativity of the masses! My favorite thing in the world is sharing the hard work of a maker.
Read articles from the magazine right here on Make:. Get one today. Illustration by Viktor Koen. Below photography by Hep Svadja. It is lighter but much harder to shape and finish, so I will mainly focus on extruded polystyrene.
It cuts easily and can be sanded and painted very well. It can be slightly heavier, but much easier to work with at home. For extruded polystyrene such as the blue foam board insulation, you can cut it well with any sharp blade.
Build your own with these instructions. These use a bit of electricity passed through a wire to produce enough heat to cut smoothly through the foam. Cutting expanded polystyrene without one is a nightmare — the knife will rip the tiny balls loose, resulting in a jagged and messy cut. Sticking two pieces of foam together can be more difficult than it sounds.
Do not use any glue that contains a solvent. Solvents will eat through your foam, leaving visible dents and craters. Gorilla glue dries quickly and adheres foam together quite well. It expands as it dries, so expect to clean up some edges. It dries quickly and bonds sheets of foam together as well as any glue. The resultant bond can be sanded and cut just like normal. No matter the method, you should apply pressure to the two pieces of foam being joined to avoid any gaps that will become visible as you cut shapes from your block.
You can get very nice results sanding extruded polystyrene with medium grit sandpaper. Start with a low grit, like a P to shape the body, then work your way upward to a higher grit to get the surface smoothness you want. After your surface is reasonably smooth, you can apply a material to it for proper aesthetics and protection from bumps and bangs.
While a prop builder might go at this job with Bondo or other automotive body putty, a drone customizer needs to consider weight above all else. Sometimes the shapes themselves are enough to convey the custom form you want.
A layer of glue or resin — Painting on a layer of PVA glue and letting it harden will create a shell. You can then paint on top of this. Latest Caleb Kraft. By Caleb Kraft Caleb Kraft. Illustrations by James Burke. Related Stories from Make:.
Send this to a friend Your email Recipient email Send Cancel. Thanks for signing up. Please try again.Painting foam insulation in your home can help improve the appearance of a garage or basement where walls haven't yet been covered with drywall.
Only water-based acrylic or latex paint should be used on foam insulation, whether you are using the material for crafts or are painting unfinished walls. Avoid any oil-based or other solvent-based paints, these contain chemicals that damage foam. Before you start painting foam wall insulation, find out whether local building codes require a fire barrier, such as gypsum board.
Though foam-insulated walls do not require sanding, they can be sanded, as long as the foam has dried completely first. Always wear your face mask when sanding, to protect your throat and lungs. Apply two or three coats of an acrylic paint to a foam craft, using a stiff paintbrush. This helps you get the paint into the pores of the foam. A wax sealant can then be applied to protect the paint.
Acrylic paints hold their color longer than oil-based paint, and cleaning brushes afterwards requires only soap and water. Apply two or three light coats of paint on foam-insulated walls, whether you are using an airbrush, paintbrush or roller. Several light coats are always best, rather than one heavy coat.
Allow paint to dry thoroughly each time, before applying another coat. Practice using a spray gun on a large sheet of paper when using one for the first time. When painting walls, hold the gun close enough to the surface that you can easily move the gun back and forth as you spray, but not so close that you over spray, causing the paint to drip and run down.
Whether painting crafts or walls, paint only in a well-ventilated space. Using flat or semi-gloss paint is best, as this hides any irregular areas of the foam much better. A high-gloss finish accentuates any bumps.
How to Make a Home Depot Surfboard
Skip to main content. Things You Will Need Foam paintbrush or roller Paint trays Face mask White latex paint, flat or semi-gloss Latex acrylic or water-based paint, flat or semi-gloss Drop cloth Airbrush optional Sandpaper optional.
Tip Using flat or semi-gloss paint is best, as this hides any irregular areas of the foam much better. Warning Keep children and pets away from an area where paint is being sprayed. Ryan, C. How to Paint Foam Insulation. Home Guides SF Gate. Note: Depending on which text editor you're pasting into, you might have to add the italics to the site name.
Customer Service Newsroom Contacts.Sand Foam is perfect for sensory exploration. It is made up using only two ingredients, sand and shaving cream. You will need clean sand, shaving cream and a large tray or tub. There is no real defined amounts for the ingredients, the sand and shaving cream amounts can be adjusted until you are happy with the consistency. We started off with 3 cups of sand and ml of shaving cream, however, we added another 3 cups of sand to our mixture to explore what would happen.
We plan to repeat this activity but next time using coloured sand and maybe a touch of glitter too! Hi Joy, After about hours the shaving cream begins to dissolve and you are left with wet sand, perfect for sand castles.
Hi Helene, yes, you can definitely dry the sand and add more shaving cream later. Have fun. Good question I have not tried shaving gel before and not really sure how this would work. To get shaving gel to foam up, you need to add water and wonder if this may help. If you give it a try, let us know how you go, good luck. We are making this tomorrow for our Dinosaur Summer Camp!
It looks like a blast! Thank you for posting! My daughter has sensitive skin also but not eczema and we use shaving cream for sensitive skin and this seems okay. I hope you are able to find something suitable. Good luck! Hi Amy, I have not used whipped cream before with this activity.
If you give it a try, let us know how you go! Thank you Lu P! Will it ruin the sand though or will I be able to use it as normal the week after?
Hi, does the sand need to be dry before you add the shaving cream? We have some sand here that has been left out in the rain unfortunately! Hi Michelle, unfortunately I think dry sand works best for this activity as wet sand is heavier and flattens the foam, making it less fluffy.
Let us know how you go, thanks. Just spread the sand out on a baking sheet and put it in the oven for a few minutes to dry it out. I used shaving gel the other day with a student. Once our hands started moving it, it did become foamy without any water. This activity looks like a Monday activity! Hi, I just want say this is such a great website. Thanks a lot. Name required. Mail will not be published required.
How to cut foam: The dumb way, the expensive way, and the brilliant/inexpensive DIY way
Subscribe Follow. Welcome and thank you for visiting Learning 4 Kids. Post Product. Share 6K. Pin 39K. Joy says:.One of the most versatile modeling products, foam board is extremely durable given it's lightweight and very easy to cut and build 3-D structures with. It is also paintable.
Architects use the material to construct miniature models of their designs, while craft enthusiasts put it to many good uses as well. Considering it is typically sold with white outer layers of paper sandwiching the foam core, painting is often necessary to finish a project.
Spray Paint: If you have a choice, use spray paint over brush-applied paint. Spray paint does not leave streaks when applied, and you have just as many color options with spray paint as you do with other paints. Acrylics: Use acrylics when painting on foam board, rather than oil-based paint. Acrylics dry faster and are easier to clean up. Sand Foam Edges: Sand down the foam edges before painting. Otherwise, they could chip away and leave visible white spots.
The paper layer, when painted, will look much different than the foam edge, but both will hold paint. Cut the material into the desired shape before painting. Painting foam board is an easy task, provided you follow a few of these tips. Happy crafting! We welcome your comments and suggestions. All information is provided "AS IS.
Spray Paint Brush: Is it easier to apply metallic wall paint or glitter wall paint? Popular Articles. Gatorfoam vs Foam Core. Create Mountains Using a Foam Board.
How to Mount a Poster on Foam Core. By Connor Doe.One of the things I neglected to mention in my banquette-building post was how to cut the foam. Having no money, I cut through five-inch-thick foam sections by making repeated swipes with a cheapie utility knife like the one above. It was time-consuming, messy, far from accurate, and doing the curves was a real pain. It's the dumb way to cut foam.
The way the pros cut foam is using one of these bad boys :. This foam cutting saw has a base that rides on tiny wheels to prevent friction, and the large area of the base keeps the blade straight up and down. Here's a similar one in action:.
Home Depot Pink Foam + Hot Knife = Bad?
If you don't have that kinda cash but have some building skills, check out this awesome DIY foam saw by YouTube user Designsbyg. You'll kick yourself when you see, midway through the video, what he actually used for the cutting device. The easiest way to cut foam is using a hot wire and you can also make hand held ones. My secret cheap method is a bread knife. Slices through all density of foam and foam rubber like butter. It does straight lines and curves with ease.
Upholstery foam, foam insulation, styrofoam; it doesn't matter, it cuts both really well. I suppose I could take out the 4 tpi resaw blade and use a 12 tpi blade like the pros use, but frankly that doesn't seem to matter either.
Learn more. For those who don't want to sit through the video, he's using a Phillips electric knife mounted in a small router table. Report as spam. I think hot wire is better methods. I should add that I use a hand-held bread knife, not electric. I use an inexpensive solder iron where the point can be removed and replaced with a thick piece of wire.
It can have a wire straight out or better, the wire can be shaped into a larger loop with both ends coming out of the solder iron.
Check online. Lots of idea's. Use an abrasive blade such as used to cut stone etc. A lot less mess than a regular saw blade and the edges are nice and sharp. I have used all ways--knife, hot wire, and electric carving knife.By Pinktoesandpowertools Woodworking Tutorials.
Have you ever been frustrated by brush and roller marks on your finished woodworking project? I recently received an email from Dustin, a reader who has this exact problem:. I think you should do a post on how to do smooth finishes for painting. Had to sand most of it down but the end result has not been as smooth as yours. Any suggestions? Thanks for the post suggestion, Dustin! By the way, I love to get reader suggestions for future posts. My contact form is in the header.
Thank you for your support! I use my Dewalt electric finish sander if it is a large amount of flat surface. Or a sanding sponge if the area is more detailed and smaller. Once the wood feels really smooth, I remove all the dust with the brush attachment on my vacuum and a rag.
I use the plastic ones in the picture if I have to, but I prefer the wood handle ones in the link. I find that they hold up better—the foam heads seem to stay attached tighter to the handle on the wooden handle option rather than the plastic.
I do find that I have problems with getting enough paint in the corners and edges with the foam brush. To fix that I do two coats at this point, before I roll it.
The link is to the brand I actually have, but I think any brand should work. As you can see, this has seen a lot of projects! I love this roller. It takes a little bit of experience to get the hang of how much paint to put on with the roller. Bare wood soaks up primer quite a bit, so you can be more generous at this point.
You should be able to roll over the whole surface on your final roll, with no pressure at all on the roller, and get a smooth look with no edges. I used very light circular motions you can do this because you are painting it—if you were staining you would need to follow the grain when you sand until it is smooth to the touch. The reason the wood feels really rough again is that the primer is water-based if you used water based and it raises the grain of the wood.
Each coat will require less sanding to get smooth again as you go along. I simply buy sheets of sandpaper, cut them into fourths, and wrap each fourth around a sanding sponge. I do like using the sanding sponge as a base because it allows a light touch and I find I can get into the corners that I need to easier. If you are not using white, then you have to decide if one coat of primer is enough and then do more than one coat of your finish color.
Right now, I do another coat of primer exactly like the first. I apply this exactly the same as the primer coats.Did you use this instructable in your classroom? Add a Teacher Note to share how you incorporated it into your lesson. Secure the foam piece to the camp table. TIP: If your design does not have an flat areas, try including some extra-material on the foam, that you can later cut off.
The cutaway pencil makes it easier to trace lines from your model onto the new block since it can slide very closeand almost perpendicular to the edges of the model. Utilize a strip of sanding paper to rub along the edges of the model to achieve cleaner rounds. You can stick a piece of tape or anything else to reinforce the paperso that it doesn't tear too easily. I noticed Sally joins two strips of sanding paper to backside of other. Thats is also a good idea so you can sand with both grits.
Just keep care of them blisters on fingers. Introduction: Foam Sanding Tips. Just some tips to help sand pink foam!
Add Teacher Note. A wooden block with one edge rounded, and a piece of sanding paper glued on it 20 mm wide approx strips of sanding paper, different grits Pink foam blocks with round scoops based on your profile requirements Pencil shaved away to the centre.
Use the cutout foam block as a template with a suitable sand paper to sand rounds faster. Did you make this project? Share it with us! I Made It! Table Saw Class 16, Enrolled. Reply Upvote.