Make plenty of tries to reduce foam utilizing no matter what you have received — utility knife, hacksaw, serrated plastic knife — and you will wish tough for a little something that cuts cleaner, more quickly, and improved. When there are all sorts of techniques to create a sizzling wire foam cutter, this layout from [jasonwinfieldnz] is equally appealing and imitable.
If you really do not currently know it, nichrome wire is nifty stuff which is commonly available in thrift shop hair dryers and toasters. It stretches as it heats up, and shrinks as it cools back down.
The appealing part of this build is that rather of working with a spring to keep pressure on the nichrome wire, [jasonwinfieldnz] created and 3D-printed a bow out of PLA that does the career elegantly. Whilst [jason] was to begin with concerned that the bow may perhaps soften, he uncovered in follow that though the bow does get heat to the touch, it’s nowhere around very hot plenty of to even warp.
One particular good touch is the very simple fence that rides together two slots and secures with wingnuts. We also like that [jason] created this foam cutter mainly from scrap material, and instead than purchase a spool of nichrome, he opted for a skinny heating component and pillaging the wire.
If you are a nichrome noob, know that it does not choose a lot juice to do the task. Even although a computer system electrical power provide is what [jason] experienced lying all-around, it’s total overkill, so you would unquestionably want to limit the present-day. Verify out the construct video clip immediately after the crack.
Nevertheless not moveable plenty of for you? All you genuinely want is a 18650, some nichrome, and a number of bits and bobs to hold it all alongside one another.