had a quote of £72 for a 5kg hardox bar which is pretty decent. is hardox 400 a good grade?
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had a quote of £72 for a 5kg hardox bar which is pretty decent. is hardox 400 a good grade?
3 seconds on GoogleQuote:
Originally Posted by Danjr1
Quote:
Originally Posted by Danjr1
72/5= £15 per kilo. If the size is exactly what you want, good deal.
If not, then you can ask yourself, what will I need to work this stuff?
And there ain't no bad grade of hardox. Its good or better.
it would be what i want. would just need the axle hole drilled and the pulleys attached. also some bearings in there. I've taken the density of hardox as approx. 7.86g per cu.cm. that correct?
That weight is correct.
Now, how are you going to drill holes accuratly enough for bearings in something that is about as hard as a cheap drill from an avarage DIY?
Outsource the machining work.
you'll never be able to drill a hole large enough to fit bearings into. a 20mm bore bearing will be roughly about 40mm diameter (or atleast the one i'm looking at is). drilling a 5mm hole through 5mm hardox 400 is a pita even with plenty of coolant and a good pillar drill. if you have access to a medium-heavy duty cnc milling machine with decent tooling you could mill a 40mm hole. if you have access to waterjetting facilities you could waterjet the hole.
where are you buying this hardox? jl steel, mtl steel and steelpro all have cutting/machining facilities. you'd probably be best seeing if they can do the work. alternatively kenny should be able to mill the hole out for you. i knew a really good waterjetting company in kent but i'm afraid i've forgotten there name :(
here's a link to the company in kent i was talking about: http://www.mlfabcuts.co.uk/
They ain't far from me. Was thinking of a 12 to 14mm Steel axle for it to spin on with bearings pressed into the bar
i'd go for 20mm myself as the shaft has to take alot of force and you should be getting a crazy amount of ke from a 5kg 40cm bar, 12mm or 14mm could bend after a big hit and break your weapon system