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  • Simplest 12V to 220V DC to AC Power Inverter DIY

    Car radios used a hefty, specifically designed and dedicated MECHANICAL VIBRATOR SWITCH similar to the model T Ford SPARK COIL. As I recall, upon disassembly it looked much like a heavy duty double pole reed switch.

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  • Fireproof Carbon Foam From Pyrolysed Bread

    This same process can be accomplished much more simply with a clean paint can and lid, with a nail-hole punched in it, and burned in a small fire in the yard!

    I have seen "Brown's Gas" referred to in other posts here, and am compelled to illuminate the error. The gas released in the pyrolization [sp?] process in this 'able has NO relation to Brown's Gas [a stoicametric mixture of Hydrogen and Oxygen resulting from the ELECTROLYSIS OF WATER!].The gas produced by pyrolization IS NOT Brown's Gas!Please forgive my misspellings; it's been over 40 years since my last chemistry class.

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  • johnny3h commented on mikeasaurus's instructable Unusual Uses for WD-403 weeks ago
    Unusual Uses for WD-40

    Oops, sorry 'bout the formatting foul-up; I composed in Word2003, and then cut and pasted into my response. I don't know how to correct the format in instructables!

    For all concerned, I am not a chemist, but I got somerelevant information from one. During the period from 1978 to 1990 I worked,and became best friends, with an outstanding Forensic Chemist. Here is what I recall from our discussion:Although we normally can’t see it, our skin surface iscovered with a layer of DEAD skin cells! Those cells are “loaded” with our natural body oil, contributing to itscolor and flexible texture. Anything which will remove oils and fats from your skin surface can remove body oil from within your skin!In chemistry there is a term called “defatting” which means,to remove fats/oils from some material.I once IMPROPERLY cleaned some carburetor parts with Barrynan Chem-tool [a very powerful (petroleum based?) DE-GREASER], WITHOUT usin...

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    For all concerned, I am not a chemist, but I got somerelevant information from one. During the period from 1978 to 1990 I worked,and became best friends, with an outstanding Forensic Chemist. Here is what I recall from our discussion:Although we normally can’t see it, our skin surface iscovered with a layer of DEAD skin cells! Those cells are “loaded” with our natural body oil, contributing to itscolor and flexible texture. Anything which will remove oils and fats from your skin surface can remove body oil from within your skin!In chemistry there is a term called “defatting” which means,to remove fats/oils from some material.I once IMPROPERLY cleaned some carburetor parts with Barrynan Chem-tool [a very powerful (petroleum based?) DE-GREASER], WITHOUT usingprotective gloves on my hands!!!! Shortly thereafter, the skin involved developed anincredibly painful BURNING sensation, and when I looked, the areas which had been “wetted” with the Chem-tool were as white asfresh, clean SNOW!!! The texture was STIFF [very restricted flexibility].I immediately called my chemist buddy for help inascertaining whether or not I needed to go to an Emergency Room!!! He told me not to worry, that an EmergencyRoom was not necessary. He thenexplained WHAT happened, and HOW to remedy the situation.The very powerful de-greaser had removed [defatted] ALL ofthe natural body oil from my skin, and having penetrated to living tissue, wascausing the burning sensation.The purewhite is the color of my dead, defatted skin cells, and the stiffness resultedfrom lack of lubrication between the skin cells.He instructed me to wash and dry the affected areas withDAWN Dish-washing Liquid [the same safe stuff they used to remove the crude oilfrom living wildlife during the Valdez, Alaska tanker oil-spilldisaster!!!]. In my case, it was toremove all traces of the Chem-tool, and thus relieve the burning sensation,which it did!Next was to work well into the affected skin, ordinaryCOOKING OIL [I had CORN OIL, which he approved].After that procedure, and wiping the excess oil from myhands, I was back to normal, like it never happened; including return ofnatural color and flexible texture!!!Do NOT use any chemicals without also usingPROPER protective equipment!!!I say again, do NOT use any chemicals without alsousing PROPER protective equipment!!!

    For all concerned, I am not a chemist, but I got some relevant information from one. During the period from 1978 to 1990 I worked, and became best friends, with an outstanding Forensic Chemist. Here is what I recall from our discussion:Although we normally can’t see it, our skin surface is covered with a layer of DEAD skin cells! Those cells are “loaded” with our natural body oil, contributing to its color and flexible texture. Anything which will remove oils and fats from your skin surface can remove body oil from within your skin!In chemistry there is a term called “defatting” which means, to remove fats/oils from some material.I once IMPROPERLY cleaned some carburetor parts with Barrynan Chem-tool [a very powerful (petroleum based?) DE-GREASER], WITHOUT...

    see more »

    For all concerned, I am not a chemist, but I got some relevant information from one. During the period from 1978 to 1990 I worked, and became best friends, with an outstanding Forensic Chemist. Here is what I recall from our discussion:Although we normally can’t see it, our skin surface is covered with a layer of DEAD skin cells! Those cells are “loaded” with our natural body oil, contributing to its color and flexible texture. Anything which will remove oils and fats from your skin surface can remove body oil from within your skin!In chemistry there is a term called “defatting” which means, to remove fats/oils from some material.I once IMPROPERLY cleaned some carburetor parts with Barrynan Chem-tool [a very powerful (petroleum based?) DE-GREASER], WITHOUT usingprotective gloves on my hands!!!! Shortly thereafter, the skin involved developed an incredibly painful BURNING sensation, and when I looked, the areas which had been “wetted” with the Chem-tool were as white as fresh, clean SNOW!!! The texture was STIFF [very restricted flexibility].I immediately called my chemist buddy for help in ascertaining whether or not I needed to go to an Emergency Room!!! He told me not to worry, that an Emergency Room was not necessary. He then explained WHAT happened, and HOW to remedy the situation.The very powerful de-greaser had removed [defatted] ALL of the natural body oil from my skin, and having penetrated to living tissue, was causing the burning sensation.The pure white is the color of my dead, defatted skin cells, and the stiffness resulted from lack of lubrication between the skin cells.He instructed me to wash and dry the affected areas with DAWN Dish-washing Liquid [the same safe stuff they used to remove the crude oil from living wildlife during the Valdez, Alaska tanker oil-spill disaster!!!]. In my case, it was toremove all traces of the Chem-tool, and thus relieve the burning sensation,which it did!Next was to work well into the affected skin, ordinary COOKING OIL [I had CORN OIL, which he approved].After that procedure, and wiping the excess oil from my hands, I was back to normal, like it never happened; including return of natural color and flexible texture!!!Do NOT use any chemicals without also using PROPER protective equipment!!!I say again, do NOT use any chemicals without also using PROPER protective equipment!!!

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  • johnny3h commented on foobear's instructable Restore a Rusted Shut Tool4 weeks ago
    Restore a Rusted Shut Tool

    In THEORY, any CARBONATED liquid is in effect dilute CARBONIC ACID, and thus will remove rust! It is not just the citric and/or Phosphoric acid, as any combinations are powerful! AND, a really powerful 'derusting' agent is, wait for it...... KOOL-ADE!!! It's so strongly acidic, that it dissolves the enamel on teeth, and bleaches old concrete back to its bright, new color!!!

    In THEORY, any CARBONATED liquid is in effect dilute CARBONIC ACID, and thus will remove rust! It is not just the citric and/or Phosphoric acid, as any combinayions are powerful! AND, a really powerful 'derusting' agent is, wait for it...... KOOL-ADE!!! It's so strongly acidic, that it dissolves the enamel on teeth, and bleaches old concrete back to its bright, new color!!!

    In THEORY, any CARBONATED liquid is in effect dilute CARBONIC ACID, and thus will remove rust! It is not just the citric and/or Phosphoric acid, as any combinayions are powerful! AND, a really powerful 'derusting' agent is, wait for it...... KOOL-ADE!!! It's so strongly acidic, that it dissolves the enamel on teeth, and bleaches old concrete back to its bright, new color!!!

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  • johnny3h commented on yztay's instructable Repair a Ball Joint With a Bike Innertube4 weeks ago
    Repair a Ball Joint With a Bike Innertube

    Some 50 or 60 years ago I R&Rd ball-joints using the hammer to the side technique, followed by a few gentle axial hammer blows to the loosened and backed-off nut. If that didn't release the tapered bolt I then used heat, hammer, and ice to the encircling control-arm or tie-rod end [but no heat to the ball-joint parts!]. To the best of my recollection, it worked every time with no damage to the ball-joint or its protective boot.

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  • Unusual Uses for Broken & Dull Drill Bits

    Excellent explanation; took me a few years to figure that out!!! And, with the tiny bits one does not need to "push down" at all, as the weight of the drill provides adequate force.

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  • 5 Ways to Start a Fire, Using Water

    Sorry, no offense, but Salt is Sodium Chloride. Sodium is an individual element which is one of the two combined elements making salt [Sodium Chloride].

    RIght on all points!

    Nabzim's reply exhibited no 'repugnance,' AND was NOT a flame. It was however, a very 'simple,'' accurate statement of fact in response to what was NOT 'a simple typo'!!! AND, Calcium CARBONATE versus Calcium CARBIDE is not a 'SIMPLE TYPO'!!!

    You suregot that right!

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  • johnny3h commented on mikeasaurus's instructable Unusual Uses for Duct Tape1 month ago
    Unusual Uses for Duct Tape

    AND... In the old days, before real gum was eliminated, BUBBLEGUM!!!

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