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Unread 11-05-2014, 20:53
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CENTURION CENTURION is offline
King of unreasonable designs
AKA: Evan the Shop Princess
FRC #1306 (BadgerBOTS)
Team Role: Mentor
 
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Re: Wrecked Aluminium from chopsaw

Quote:
Originally Posted by Oblarg View Post
[snip] Work pieces must be clamped on both sides if possible (we just use normal c-clamps), and if it is impossible to clamp either side then a mentor must make the cut.
[snip]
Usually clamping on both sides of the blade is considered to be a very bad idea (Blade binding and all that). We have had no problems clamping with the built-in clam and a C-clamp on one side.

If you follow the "Don't bring the blade up until it stops" rule, then I don't think clamping on both sides is an issue, but I would still stick to the one side.

I always try to remember that these are skills that the students will take with them, beyond my or any mentor's guidance. And in recognition of that, I try to avoid teaching the students things like this. That is; procedures that are unsafe, and only become safe under a narrow set of circumstances.

For instance, if the student is cutting a different material, where you can raise the blade under power, and they still clamp both sides, then something bad could happen.
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FRC #1306 - BadgerBOTS - Mechanical/Machining/Safety/Marketing Mentor
FTC #6806 - Ratchet Robotics - Head/Founding Mentor
2010 - Wisconsin Regional Chairman's Award Winner - Wisconsin Regional Quarter-finalist - Curie Division #5 Seed, Quarter-finalist
2011 - Wisconsin Regional Innovation in Control Award Winner - Wisconsin Regional Quarter-finalist
2012 - Wisconsin Regional Engineering Inspiration Award Winner - Wisconsin Regional Semi-finalist
2013 - Wisconsin Regional Chairman's Award Winner


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