What is the best affordable Dremel for cutting c channels? Thanks
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Although not a dremel, you can buy a hack saw or tin snips for less than $15. To be frank, most dremels below $50 are very poor and break easily. I would recommend dremels that are roughly within the $70-100 range. Most dremels within that range on google are really nice.
I hope this helps 
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Get a good vise and a hacksaw. Dremel is not that good at cutting c channels. Dremel multitool is ok at cutting aluminum channels, but hacksaw with good vise will always be faster.
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Can confirm, hacksaws are really fast at eating through c channels. Less than 30 seconds if you get good enough at it.
Steel is an issue though
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Yes but at the same time, steel C channels are usually not used for competition, and don’t need to be cut as often to meet size limits.
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When cutting metal, beware of chips and grit getting into motors and electrical controls.
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Yes so when I cut metal I would take the part off the robot before cutting, to avoid getting any wires. However if inevitable, I use vacuum after cutting to clean the robot.
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also be wary of metal splinters. steel splinters are easy to get out of your hands, just use a magnet, but aluminum ones are not fun to remove.
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I find that scissors can work pretty well sometimes
You mean tin snips?
I agree, if you get good enough, because if you arent that skilled at using them, then your cut pieces are just going to end up being junk
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