Make adequate tries to minimize foam using whatsoever you’ve received — utility knife, hacksaw, serrated plastic knife — and you will wish difficult for something that cuts cleaner, more rapidly, and improved. Although there are all kinds of approaches to construct a sizzling wire foam cutter, this layout from [jasonwinfieldnz] is each attention-grabbing and imitable.
If you really don’t now know it, nichrome wire is nifty things which is conveniently obtainable in thrift retail outlet hair dryers and toasters. It stretches as it heats up, and shrinks as it cools back again down.
The appealing section of this make is that rather of applying a spring to preserve tension on the nichrome wire, [jasonwinfieldnz] built and 3D-printed a bow out of PLA that does the work elegantly. Although [jason] was in the beginning worried that the bow may maybe melt, he located in apply that even though the bow does get heat to the touch, it’s nowhere in the vicinity of hot plenty of to even warp.
One great contact is the basic fence that rides along two slots and secures with wingnuts. We also like that [jason] designed this foam cutter mostly from scrap product, and alternatively than buy a spool of nichrome, he opted for a skinny heating component and pillaging the wire.
If you’re a nichrome noob, know that it doesn’t get much juice to do the task. Even however a pc electricity supply is what [jason] had lying about, it is comprehensive overkill, so you would certainly want to limit the recent. Test out the build video clip immediately after the split.
Continue to not moveable sufficient for you? All you genuinely will need is a 18650, some nichrome, and a couple of bits and bobs to keep it all alongside one another.