Carsnz123 Posted January 20, 2018 Share Posted January 20, 2018 3 hours ago, Adoom said: Electrolysis ing. Seeing how it does with the rusty bits on the bottom of the door. I've not bothered cleaning anything first. Unfortunately, I didn't remember the measurements of the doors and the longer front doors are about 30mm longer than the planter box. Electrolysis is line of sight so you'll get better results with multiple cathodes around the planter box. Quote Link to comment Share on other sites More sharing options...
Adoom Posted January 20, 2018 Share Posted January 20, 2018 18 minutes ago, Carsnz123 said: Electrolysis is line of sight so you'll get better results with multiple cathodes around the planter box. You mean anode. The cathode is the door. My anode is an 'L' shaped bit of re-bar that goes the length of the box. It could be better designed, but I threw this together in about 5 minutes. Quote Link to comment Share on other sites More sharing options...
Carsnz123 Posted January 20, 2018 Share Posted January 20, 2018 Yeah that will work better than just a bar in tr corner Quote Link to comment Share on other sites More sharing options...
SOHC Posted January 20, 2018 Share Posted January 20, 2018 4 hours ago, Carsnz123 said: Testing out @SOHC's Epsom salt in battery sharn. Will report back with results when battery is charged. it may take a few charges before they come fully right Quote Link to comment Share on other sites More sharing options...
tortron Posted January 20, 2018 Share Posted January 20, 2018 suspend the rod inside the door so it does the whole inside I reckon Quote Link to comment Share on other sites More sharing options...
Adoom Posted January 20, 2018 Share Posted January 20, 2018 10 minutes ago, tortron said: suspend the rod inside the door so it does the whole inside I reckon I may do. This door isn't really rusty inside. Most of the rust is outside along the bottom where there is a c-channel to hold the rubber seal. Bonus, the baking soda/washing soda is making the waxoil stuff.....emulsify? and become easy as to just wipe off. Quote Link to comment Share on other sites More sharing options...
Seedy Al Posted January 21, 2018 Share Posted January 21, 2018 On 20/01/2018 at 08:29, RUNAMUCK said: Tech spam query Does a clutch cover/pressure plate require and form of lube to work properly? Obviously not like add a quart of oil every three months. But do the fingers require anything to aid their operation? I ask because I've got one that is both rusty, and has generous amounts of black grot on it. I was thinking of banging it through a turbo wash before trying Seedy Al's trick with the citric acid. @Seedy Al What was that citric acid called at the supermarket? And what ratio did you mix it at? Hey sorry just saw this now. Yeah from super market in the baking area. Mine was in a small glass jar with a red lid. As for ratio it seems kinda just do what ever spec. However one thing i read was about 1/2 ounce to 15 ounce of warm water. I didn't measure anything. I just boiled the jug twice, topped up the rest with cold water, added the whole 100g jar and stired it up. 2 Quote Link to comment Share on other sites More sharing options...
Testament Posted January 21, 2018 Share Posted January 21, 2018 White vinegar works pretty good too 1 Quote Link to comment Share on other sites More sharing options...
Spencer Posted January 22, 2018 Share Posted January 22, 2018 Just a heads up, you shouldn’t acid bath hardened steel parts I’m pretty sure. Obviously depends a lot on what hardened means but it can make shit go brittle and fall apart. Best used for panels and trim and quick surface cleaning. Soaking some mechanical parts is dangerous IMO, I tested a bunch of things around the shed and springs crumble and will snap after a good acid bath. High tensile bolts go real black and weird after soaking for awhile. It’s hydrogen embrittlement or something, people argue about it on the internet but something bad goes on with hard steel in acid baths. 2 Quote Link to comment Share on other sites More sharing options...
Spencer Posted January 22, 2018 Share Posted January 22, 2018 Cast shit will melt and dissolve quickly in mild acid baths also. Quote Link to comment Share on other sites More sharing options...
Testament Posted January 22, 2018 Share Posted January 22, 2018 just like she said, depends how strong and how long Quote Link to comment Share on other sites More sharing options...
ajg193 Posted January 22, 2018 Share Posted January 22, 2018 Hydrogen is super small, so it diffuses fast as bugger into stuff. Acid is a source of hydrogen ions, which is even smaller than H2 and will thus diffuse fasterer and buggerrer into stuff. I'm not sure if they have come up with a be-all-and-end-all explanation of how hydrogen causes embrittlement in hard steeks yet. Don't get high tensile bolts galved, same problem. I think this caused a window cleaning rig to fall off of a NY skyscraper at some point? Quote Link to comment Share on other sites More sharing options...
ajg193 Posted January 22, 2018 Share Posted January 22, 2018 Have a read of this if you feel like nerding: https://www.google.co.nz/url?sa=t&rct=j&q=&esrc=s&source=web&cd=10&ved=0ahUKEwiorPSNzuzYAhXFoZQKHaKDA58QFghTMAk&url=https%3A%2F%2Fpdfs.semanticscholar.org%2F838a%2Fb4212897accddfdd7617f85132f1f954a4fa.pdf&usg=AOvVaw2RtguLqEsZcqRUFwlaBOCU Quote Link to comment Share on other sites More sharing options...
Testament Posted January 22, 2018 Share Posted January 22, 2018 you cant remove hydrogen embrittlement onces its there, but you can put other chemicals with the acid to inhibit the effect. Quote Link to comment Share on other sites More sharing options...
SOHC Posted January 23, 2018 Share Posted January 23, 2018 On 1/22/2018 at 15:35, Spencer said: Just a heads up, you shouldn’t acid bath hardened steel parts I’m pretty sure. Obviously depends a lot on what hardened means but it can make shit go brittle and fall apart. Best used for panels and trim and quick surface cleaning. Soaking some mechanical parts is dangerous IMO, I tested a bunch of things around the shed and springs crumble and will snap after a good acid bath. High tensile bolts go real black and weird after soaking for awhile. It’s hydrogen embrittlement or something, people argue about it on the internet but something bad goes on with hard steel in acid baths. I had some high tensile bolts done in bright zinc and they snapped off like carrots 1 Quote Link to comment Share on other sites More sharing options...
flyingbrick Posted January 23, 2018 Share Posted January 23, 2018 On 20/01/2018 at 14:59, Carsnz123 said: Electrolysis is line of sight so you'll get better results with multiple cathodes around the planter box. Trust me- this is a cool science project but the line of sight thing is the deal breaker. Buy a few bottles of vinegar and soak the bottom of the door.. Then soak in a baking soda solution afterward. Vinegar is 100000% easier and better than Electrical methods 1 Quote Link to comment Share on other sites More sharing options...
Carsnz123 Posted January 23, 2018 Share Posted January 23, 2018 I did a couple exhaust manifold in mums green bin. Lined the sides with steel rods and suspended the manifold in the middle. Left it hooked to a 6 amp charger for half a day. Took all the rust off no probs. changing the subject: Anyone here have experience welding cast aluminium? Was thinking of welding up the combustion chambers of a spare L26 head to bump up the compression. Factory is 8.8:1 and I want 10:1. Skimming it won't yield the results I want. Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted January 23, 2018 Share Posted January 23, 2018 I can give you the number of a guy who can do it good. Unless you're a ninja with a TIG already? Quote Link to comment Share on other sites More sharing options...
Carsnz123 Posted January 24, 2018 Share Posted January 24, 2018 Na never touched a tig. Was thinking of giving it a go with the gas torch. Quote Link to comment Share on other sites More sharing options...
Yowzer Posted January 24, 2018 Share Posted January 24, 2018 Alloy and gas torch don't mix Quote Link to comment Share on other sites More sharing options...
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