Styrofoam cutter for pedal cushions

[gtudoran]

Hey guys, another weekend project for those who are interested. A small styrofoam cutter that i've build so i can make pedals protections that are fitted inside the cardboard boxes.
Hope you will find it useful (especially those who are selling pedals)

Result


Clip

Regards,
DeX

[Finom1]

Great project. What were the resistor values and how did you calculate what you needed for them?

[gtudoran]

+Finom1 - The resistors are 5 x 33 ohm in parallel (20W per piece) so that would give around 6.6OHM resistor.
The result was made by experiment because i was a little bit too lazy to do it, but also the PSU is way too bigger for this project, the voltage should be around 9 to 12V @ 3-4 amps but that depends a lot on what filament /wire you are using. I'm using a 0.3 (if i remember well) NiCr wire from some house appliance that looks like this:
They are used for electrical heaters like this:
The whole resistor was is rated for 220V but i will buy some 0.1 NiCr wire for the final version and see how it goes.

[gtudoran]

I'm sorry for double post but i've forgot a small details. For those are interested, here you can find a small primer about wires/ current ratings etc

http://hotwirefoamcutterinfo.com/_NiChromeData.html

[Finom1]

Thank you for sharing. Great solution to a packing problem.