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View Full Version : Nifty video about home electro-chemical etching.



DICKEYBIRD
09-27-2012, 10:45 AM
Bumped into this how-to video http://www.youtube.com/watch?v=jEnNMTMZadw on cutting out fairly complex shapes out of thin carbon steel. Might come in real handy someday making shims. Wonder if it would work on copper or aluminum as well?

PTSideshow
09-27-2012, 11:08 AM
Pretty slick, now have to source the paint on this side of the world etch primer paint. Thanks

lazlo
09-27-2012, 11:28 AM
now have to source the paint on this side of the world etch primer paint. Thanks

"Self-etching primer" At any automotive or welding supply store.

DICKEYBIRD
09-27-2012, 11:32 AM
Pretty slick, now have to source the paint on this side of the world etch primer paint. ThanksI still have a half-pint left of the old Dupont chromate green stuff with the glass bottle of acid activator. Man that stuff'll stick to ANYTHING.

Dunno 'bout rattle can etching primer. I hope someone'll pipe up with some good stuff.

edit: See!:D

PTSideshow
09-27-2012, 11:37 AM
Didn't catch that self part in his description. That does make it easier!

lazlo
09-27-2012, 11:39 AM
By the way, that's Bruce Simpson, the DIY cruise missile guy! :D

http://www.interestingprojects.com/cruisemissile/

I bet he's a lot of fun over a beer :)

DICKEYBIRD
09-27-2012, 12:32 PM
By the way, that's Bruce Simpson, the DIY cruise missile guy! :D

http://www.interestingprojects.com/cruisemissile/

I bet he's a lot of fun over a beer :)Very interesting story!

Maynard Hill's design did the 1st autonomous transatlantic model aircraft flight back in '03 and there was criticism then of the possible terrorist implications. He was a brilliant engineer and avid model designer/builder for many years before he died. https://www.modelaircraft.org/files/HillMaynard.pdf

He perfected the electrostatic wing leveller system years before to help capture the F.A.I. world endurance and distance records for powered R/C models.

dp
09-27-2012, 03:29 PM
Where can a person find that kind of spring steel?

DICKEYBIRD
09-27-2012, 03:54 PM
Where can a person find that kind of spring steel?The stuff ain't cheap! http://www.onlinemetals.com/merchant.cfm?pid=16621&step=4&showunits=inches&id=1&top_cat=0 At this source anyway. (I guessed at the thickness Aussie dude was using for his reed valves.)

lazlo
09-27-2012, 04:09 PM
Where can a person find that kind of spring steel?

Any machinist supply, including Enco. "Spring steel shim stock."

dp
09-27-2012, 04:46 PM
Any machinist supply, including Enco. "Spring steel shim stock."

Yikes - that stuff is expensive. I think I just found a new use for my old piston ring compressor. Haven't used it since I put my Continental C-85 engine together in 1985 :)

flylo
09-27-2012, 06:13 PM
Gotta try that!

crusty
09-27-2012, 08:57 PM
The stuff ain't cheap! http://www.onlinemetals.com/merchant.cfm?pid=16621&step=4&showunits=inches&id=1&top_cat=0 At this source anyway. (I guessed at the thickness Aussie dude was using for his reed valves.)

he's a KIWI dude!

That's like calling a Canadian a Yank

DICKEYBIRD
09-27-2012, 10:00 PM
he's a KIWI dude!

That's like calling a Canadian a YankOOPS, sorry 'bout that!:o Please convey my sincere apologies to nice Mr. Kiwi fellow. I'd hate to be the 1st target for one of his cruise missiles.

fishfrnzy
09-27-2012, 10:00 PM
There is always McMaster-Less than half the price

http://www.mcmaster.com/#spring-steel-shim-stock/=jhbat1

browne92
09-28-2012, 01:18 AM
He talks so fast, he makes my head hurt. But I like how the valve turns out.

bborr01
09-28-2012, 10:08 AM
Interesting video. Thanks for posting it Dickeybird.

Brian