Ofsted/my friendly uncle/I don't know

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TeamCrash
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Re: Ofsted/my friendly uncle/I don't know

Post by TeamCrash » Thu Jan 14, 2016 7:53 pm

Hey buddy, you coming along to Ant Freeze 3?
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Occashokka
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Re: Ofsted/my friendly uncle/I don't know

Post by Occashokka » Sat Feb 20, 2016 2:54 pm

I'm about to buy the disc, should I get mild steel or normal steel or are both terrible.(it's going to be 2mm 2 toothed)
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Shakey
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Re: Ofsted/my friendly uncle/I don't know

Post by Shakey » Sat Feb 20, 2016 10:36 pm

Both are pretty terrible to be honest (I thought normal steel was mild :S ). But they won't hold a tooth.
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Re: Ofsted/my friendly uncle/I don't know

Post by Occashokka » Sun Feb 21, 2016 7:28 am

What should I make the disc from then, someone just tell me what they use that works, hardox? Stainless?Titanium(I really hope not as costs loads)????bananas???
Team Badger
Has a 3d printer now yay
-£4.82+VAT (intact)
-cool modulated printed thingy
-not yet built nasty mean spinnt thingy

I'm gonna build something huge and stupid, try and stop me :P

Hogi
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Re: Ofsted/my friendly uncle/I don't know

Post by Hogi » Sun Feb 21, 2016 9:14 am

i think all of those can be used. i wouldn't know which one was best though.
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Rapidrory
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Re: Ofsted/my friendly uncle/I don't know

Post by Rapidrory » Sun Feb 21, 2016 11:59 am

2mm stainless is probably the best cheap option; Why wait uses stainless, and although not ideal it works much better than mild.
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Re: Ofsted/my friendly uncle/I don't know

Post by Occashokka » Sun Feb 21, 2016 12:52 pm

I had asked laser master and kcut for quotes on SS a while back and lasermaster said £28 and kcut said £18!! A £10 pound difference is huge for an £18 product so one wonders what lasermaster were thinking but unless anyone says otherwise or suggests a much cheaper option I shall go ahead with kcut
Team Badger
Has a 3d printer now yay
-£4.82+VAT (intact)
-cool modulated printed thingy
-not yet built nasty mean spinnt thingy

I'm gonna build something huge and stupid, try and stop me :P

Rapidrory
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Re: Ofsted/my friendly uncle/I don't know

Post by Rapidrory » Sun Feb 21, 2016 1:12 pm

Most people use Kcut from what I've heard, so I'd go for it..
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BeligerAnt
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Re: Ofsted/my friendly uncle/I don't know

Post by BeligerAnt » Sun Feb 21, 2016 1:58 pm

Antipathy used a 4mm aluminium bar with steel teeth bolted to the ends. The aluminium is plenty strong/stiff enough and the teeth are easy to replace.
Don't use hardened materials for teeth (like utility knife/scalpel blades) as they shatter when they hit anything. Tempering them means they don't break but then they do get worn quite quickly.

Weight nearer the ends is most effective (think bicycle wheel) as long as the bar is stiff enough. Aluminium is much easier to balance as it's easier to file bits off the get the balance right. If you don't balance the weapon you won't be able to spin it very fast before losing control of the robot!
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Re: Ofsted/my friendly uncle/I don't know

Post by Rapidrory » Sun Feb 21, 2016 2:01 pm

If designed correctly, it will be balanced on arrival fro Kcut. Stainless steel is a lot lower maintenance than aluminium, especially when driven by a big brushless motor...
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