4mm threaded aluminium round bar

[psycho_fling]

hi all

looking for a piece of 4mm threaded aluminium round bar around 300mm+ needs to be ali due to weight.

i've had a search about can't seem to find anything suitable, anyone with some or contacts please reply

cheers alex

[typhoon_driver]

Re: 4mm threaded aluminium round bar

What are you going to use it for? I can't see any kind of threaded ali bar that small being useful in combat robots

[psycho_fling]

Re: 4mm threaded aluminium round bar

It's for my product design course making an electro mechanical reading aid

[Max]

Re: 4mm threaded aluminium round bar

I know it's not ideal but you could always just thread a bit of normal Ali rod with a die.

[psycho_fling]

Re: 4mm threaded aluminium round bar

that is the other option but trying save a bit of time

[maddox10]

Re: 4mm threaded aluminium round bar

Forget treading it with a die. Most ali that size is too soft and will gall.

At least bend in all directions at the same moment.

I could try to thread a titanium rod. But that will cost me a die, at least.

[PJ-27]

Re: 4mm threaded aluminium round bar

Is weight that much of an issue? I'm assuming you could find a steel threaded rod much easier.

[psycho_fling]

Re: 4mm threaded aluminium round bar

yes weight is the issue ....i want to make it light portable etc....it's proably hard to imagine without a detailed explanation of my product which over the interent is quite hard

thanks guys

[PJ-27]

Re: 4mm threaded aluminium round bar

How long do you need it?

You could look into M4 Ali Bolts.

[maddox10]

Re: 4mm threaded aluminium round bar

Steel threaded rod M4 300mm long. 21 grams, pricetag, per meter a few £ in any serious DIY shops.

Aluminium threaded rod M4 300mm long 7 grams.

Titanium threaded rod M4 300mm long 12 grams.


How much is that 14 or 9 grams worth?

[psycho_fling]

Re: 4mm threaded aluminium round bar

hmmm i see your point from my measurements its around a 20g difference

and when your building somethin in grams a difference of 20g is quite big as roboteers i think we all understand

[maddox10]

Re: 4mm threaded aluminium round bar

The question stays the same.

What is that weight worth?

[psycho_fling]

Re: 4mm threaded aluminium round bar

enough to make extra hassle and work worth it

[Max]

Re: 4mm threaded aluminium round bar

If weight is so important and strength isn't couldn't you go for a steel m3 or even m2 rod as may still be stronger but similar weight to Ali rod?

[typhoon_driver]

Re: 4mm threaded aluminium round bar

Well doing a quick search, ebay threw up some M6 ali threaded rod and if weight is a real issue but strength isn't as bad then you could go for plastic

http://www.bluemay.co.uk/plastic_fasten ... d_rod.html