Den 2021-01-25 kl. 00:00, skrev dave engvall:
Worst case you find a scrap automotive spring. It is probably
something like 5160. Torch cut a piece. Anneal, forge, mill, grind,
etc to desired shape. Heat until it is not magnetic, quench in oil.
Temper back to about Rc 50. Test. The first try may not be good.
Adjust as necessary in thickness and temper. That is the long route.
Of course you need a friend with a way to grind, shape and harden it.
Machinery's Handbook has a pretty good section on springs.
Your ruined saw may be your best bet; thin enough to cut with an
abrasive disc.
Spotted the ruined saw then I cut some wood I should thru away to heat
my workshop. If abrasive cutting work it will do the trick for my first
prototype fast and cheap.
Short route: buy spring steel off web or preformed springs that look
about right in dimension.
Brownell's lists an assortment of 1075 but also says it out of stock.
Brownell's? Only found guns and bullets. Some things are better viewed
from the back than the front.
This material used as clamps for transistors should be what and ought to
be easy come by at least in some parts in the world. Problem is I
neither know suitable alloy or reseller.
Steel outlet want to sell you a 100 lbs... :-(
That's to much, will never use it.
Good liuck.
Dave
ps. There must be better options.
Yes maybe. I could make some redesign and buy springs, then it will look
more like others do, may be needed for other reasons but otherwise my
design should be a rather good choice and this spring thing is more or
less the last problem left to solve.
Regards Nicklas Karlsson
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