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wktaylor

Well-Known Member
Joined
Sep 5, 2003
Messages
172
Location
Midwest USA
WD40 = Water Displacing formula #40 = qualified products list for MIL-C-23411 [CX] & MIL-PRF-81309 low viscosity, water displacing CPC.
 

wsimpso1

Super Moderator
Staff member
Log Member
Joined
Oct 18, 2003
Messages
6,511
Location
Saline Michigan
My last acquisition was a ultrasonic amplifier used to record the comunication between bats. It cost me 39 bucks while if you buy an ultrasonic amplifier to detect leaks in a vacuum bag from a composite specialist it will cost you between 200 and 400 cheapest.
Please post a pick to the seller!
 

rv7charlie

Well-Known Member
Joined
Nov 17, 2014
Messages
565
Location
Jackson
Gasoline in a pump-up weed sprayer is a lot less expensive and far more effective than wasp spray. Just remember not to spray a nest that's in the wall of a house trailer, directly above a natural gas 'packet' HVAC unit with a lit pilot light.......


Seriously, it works great, but don't do it.
 

proppastie

Well-Known Member
Log Member
Joined
Feb 19, 2012
Messages
4,426
Location
NJ
Weed killer (round up) is corrosive...I have asked the airport not to spray around my airplane and I would take care of it....My special weed killer is ........gasoline .
 

choppergirl

Banned
Joined
Jan 30, 2015
Messages
1,682
Location
Choppergirl's Flying Circus ★★☠★★ AIR-WAR.ORG
I know to avoid spraying bleach on anything organic... it turns into some dangerous neurotoxin that doesn't degrade in the environment. Sprayed on roofing shingles it will kill moss, but... 20 years later when you're still walking on that ground with your bare feet. :-/ Just recently I saw an article on PFAS, which are some toxic floride product that comes off of non-stick pots and pans, carpets, etc that also ends up in your body, is toxic, and never degrades. I would not spray gasoline on anything, because I don't want that in the ground water. I try to dump mine onto a log I know will eventually get burned, but it probably gets absorbed, and then evaporates before that happens. Maybe in the air is better because it gets aerosolized, disbersed, and comes down in the rain again... but still... will end up in the drinking water. Best it gets combusted somehow.

My shop is unused, I'm wondering if I should start a hand sanitizer production company like Shindler's Pots and Pans manufacturing plant, to fund my airplane dreams. I got $3000 and another $3000 on the way in the next 3 months, I was going to put towards an airplane. I'm guessing rubbing alcohol in bulk from some chemical supply shop, soap, fragrance, sodium laureth sulfate, and some homemade recipe off the internet. Any insights on something with secret excellent hand sanitizing properties? Gritty sand like in Lava soap? :p
 

lr27

Well-Known Member
Joined
Nov 3, 2007
Messages
3,822
CG:

I think if the alcohol content is high enough, it should work. At home, we are thinking about mixing aloe vera gel with the alcohol, to avoid lizard skin with cracks. I found the following instructions from the WHO:
If you do this right, you will be providing a public service*. Unfortunately, depending on the bureaucracy in your area, you may have to go bootleg**. I suppose, if you're lucky, there might also be some government entity that would smooth the way for you, since it's now a national emergency.

If you were making it for me, I'd ask you to leave out the artificial stink that most such products have.

Meanwhile, they say washing your hands with soap and water works fine. When you have soap and enough water.

*Not using enough alcohol might actually make things worse instead of better.
** I never told you this!

----------------

beridos:
It seems I've lost some of my high frequency hearing, so I'd be interested in info about bat detectors. I've looked into it before, but I don't think I needed it as much then. I used to hear some "ultrasonic" alarms, the scream from TV's and CRT's, etc. Not anymore.
 

BJC

Well-Known Member
HBA Supporter
Joined
Oct 7, 2013
Messages
10,810
Location
97FL, Florida, USA
I'm guessing rubbing alcohol in bulk from some chemical supply shop, soap, fragrance, sodium laureth sulfate, and some homemade recipe off the internet. Any insights on something with secret excellent hand sanitizing properties?
Ask around; you are in Georgia and I grew up there, so I know that there is money - tax free money - to be made by manufacturing a good, high quality, high proof alcohol. Start with corn and sugar.


BJC
 

dog

Well-Known Member
Joined
Dec 29, 2019
Messages
278
My shop is unused, I'm wondering if I should start a hand sanitizer production company like Shindler's Pots and Pans manufacturing plant, to fund my airplane dreams. I got $3000 and another $3000 on the way in the next 3 months, I was going to put towards an airplane. I'm guessing rubbing alcohol in bulk from some chemical supply shop, soap, fragrance, sodium laureth sulfate, and some homemade recipe off the internet. Any insights on something with secret excellent hand sanitizing properties? Gritty sand like in Lava soap? :p

No grit for sanitizing,scratches skin and might embed bits.
Explore glycerin(lots availible from wvo bio diesel operations) for gelling, or just (jelo)
Alcohol from a plant doing corn ethenol for mixing with gas, might just get a 45 gal poly
barel for a good price.
Lemon rinds or just lemon oil from the health food store will mix well and be cheap and effective.
Work out what jells alcohol and rest is marketing
and or a zombie apocolipypse induced mega demand.
I just left another forum where they are discussing there rationalizations for hording TP
and hand sanitizer,etc.
Do the whole set,masks,gloves,sanitizers,and the suits,jump your logo right onto national news.
Stress its lethality to all known life forms,make it
truely deadly,should deal with any liability.
Just take care of you and live to spend the loot.
 

rv7charlie

Well-Known Member
Joined
Nov 17, 2014
Messages
565
Location
Jackson
You heard TV CRTs (as did I) because they weren't really ultrasonic; they ran at a bit north of 15,000 cps. And while I couldn't find any specs on the old ultrasonic motion detectors, I'm pretty sure they ran at roughly the same frequency (I could hear those, too).

IIRC, bats operate up around 150,000 cps. Most healthy youngsters (pre-rock&roll concert age) can hear up to around 20,000 cps. Maybe those bat detectors will work at sub-ultrasonic frequencies too; I don't know.
 

dog

Well-Known Member
Joined
Dec 29, 2019
Messages
278
The microwave generator from an oven can be removed and burried in a paych of dirt that you want to plant a garden,leae it on for a bit and it will kill all the weeds.
 

robertl

Well-Known Member
Joined
May 5, 2017
Messages
153
Location
Heath Springs, S.C. USA
I know to avoid spraying bleach on anything organic... it turns into some dangerous neurotoxin that doesn't degrade in the environment. Sprayed on roofing shingles it will kill moss, but... 20 years later when you're still walking on that ground with your bare feet. :-/ Just recently I saw an article on PFAS, which are some toxic floride product that comes off of non-stick pots and pans, carpets, etc that also ends up in your body, is toxic, and never degrades. I would not spray gasoline on anything, because I don't want that in the ground water. I try to dump mine onto a log I know will eventually get burned, but it probably gets absorbed, and then evaporates before that happens. Maybe in the air is better because it gets aerosolized, disbersed, and comes down in the rain again... but still... will end up in the drinking water. Best it gets combusted somehow.

My shop is unused, I'm wondering if I should start a hand sanitizer production company like Shindler's Pots and Pans manufacturing plant, to fund my airplane dreams. I got $3000 and another $3000 on the way in the next 3 months, I was going to put towards an airplane. I'm guessing rubbing alcohol in bulk from some chemical supply shop, soap, fragrance, sodium laureth sulfate, and some homemade recipe off the internet. Any insights on something with secret excellent hand sanitizing properties? Gritty sand like in Lava soap? :p
For $6000 you could get a pretty nice U/L. I almost pulled the trigger on a CGS Hawk for that amount a couple of years ago but I wanted a 2 seater. I think it's still available near Florence , S.C.
 

lr27

Well-Known Member
Joined
Nov 3, 2007
Messages
3,822
I saw a Himax for sale for what I think was $2k last summer. I suspect the engine wasn't included or was trashed, but if the rest was in good shape it would have been a good deal.
 

PTAirco

Well-Known Member
Joined
Sep 20, 2003
Messages
3,519
Location
Corona CA
Stop trying to drill holes in Plexiglass. Melt them with a soldering iron. I've cracked many a piece when drilling and yes, I do use the recommended modified drill bits. Haven't cracked one since I started melting them. You'll have to deburr them of course.
 

wktaylor

Well-Known Member
Joined
Sep 5, 2003
Messages
172
Location
Midwest USA
Use special drill bits designed for acrylic/polycarbonate.
These have a 60-degree point angle with special tip-features and spiral flutes for drawing-out chips safely.
Image result for IMAGES FOR DRILL BITS FOR ACRYLIC PLASTIC
With some practice conventional 135-degree point HSS drill bits can be sharpened and re-ground to make various diameters... but I'm not that good...
I have several great guides for working with acrylic plastic... most of which are very old [Rohm & Hass manual for working acrylic plastics]… but here are a few I have found on-line of value that can be downloaded or 'found'...

USAF T.O. 1-1A-12 ENGINEERING HANDBOOK SERIES FOR AIRCRAFT REPAIR - FABRICATION, MAINTENANCE AND REPAIR OF TRANSPARENT PLASTICS

Working With Acrylic...
http://www.dna.caltech.edu/~nick/Working with Acrylic.pdf
Lucite
Lux ... ...
Fabrication Guidehttps://www.ocip.com/wp-content/uploads/2016/07/luciteluxfabricationguide.pdf

ANC-17 Plastics for Aircraft - P2 Transparent Glazing Materials https://books.googleusercontent.com/books/content?req=AKW5Qaew_7yjMLP_4TMfVbbtjAX3bwWuZNwM07zVTQ6XJSk5r5eOmnrVvzi3iDZjslendGV258gNvugMccoy7IyodRN84bXUa8Slqb51GMgAnnMvzWT8yU2XyTb2KGps9oYpe988ILu3JKBviN4h329hkSv92qEpyCE5jS2tK5RTvWNitQZqTPubE_mdgosI3MYF9X6TbTwC-Dxh2UsXN-MRGWMbRm5_IYh0xloqQKZCjz6XUifjYXwFPiMt8oR2Uopq334yJGLEkmTDrC5PNaJaINcim6f3S7IpuJf97_L94icaNJiAJ5c
 

FinnFlyer

Member
Joined
Nov 19, 2019
Messages
12
Location
Bell, FL
Stop trying to drill holes in Plexiglass. Melt them with a soldering iron. I've cracked many a piece when drilling and yes, I do use the recommended modified drill bits. Haven't cracked one since I started melting them. You'll have to deburr them of course.
I think I read that heating it will introduce (invisible) stress risers. Heating edges to smooth them is not recommended. So I don't think that making holes with heat is a good idea either. Use drill bits that "scrape" rather than cut their way through the plexiglass -- like step drills, the above drill set or homemade ones. I simply ground the flutes to make them look like a step drill. A drill that cuts - digs in - and forces the sides of the hole apart is what causes cracks.

Finn
 

Victor Bravo

Well-Known Member
Joined
Jul 30, 2014
Messages
7,055
Location
KWHP, Los Angeles CA, USA
I got $3000 and another $3000 on the way in the next 3 months, I was going to put towards an airplane.
Yo Chops, keep that money for an airplane. There's going to be some incredible bargains here pretty soon, I'm sorry to say. Six grand may buy you a very good, safe, reliable LSA or UL style airplane that you can get a lot of use out of. They already keel-hauled some guy in TN for buying up 17,000 hand sanitizers and trying to be a little too much of a textbook American capitalist. So if you start up a bootleg sanitizer operation you may get painted with that same brush.
 

choppergirl

Banned
Joined
Jan 30, 2015
Messages
1,682
Location
Choppergirl's Flying Circus ★★☠★★ AIR-WAR.ORG
It puts me in a weird dilemma with 3 in the shop, since I've started flying fpv acro kwads, they fly like da hotness... 400hp Shelby Cobras.
They are da bomb. I can take them anywhere I want to fly in a backpack on my Honda Rebel and be up in the air a kilometer away within minutes. I race them at high speed around tree trunks and under trees and in high graceful swoops and dives up in the air.
Stick them into a kite eating tree? High G's that would kill you? No problem. I'm under a shade tree in a pop out lawn chair.
Ultralights now seem big and slow and pokey and clunky and obsolete like a horse drawn hay wagon.

What to do, what to do, I just sit on them, they don't seem fun or interesting any more, maybe a solution will present itself. I've grown exhausted and tired of fixing things :-/ Trailering a huge 20ft plane to the airport and back and assembling and disassembling it just to fly around a few miles and land at the same airport seems now like a huge exhausting proposition fraught with headaches and problems. If I crash an ultralight, there goes my $5,000... if I crash a kwad, maybe 5 minutes swapping out $10 in plastic props with one wrench in the field. Nobody is around and nobody is the wiser or could care less. I don't have to worry about being surrounded by an ocean of local good old boy cop cars with blue flashing lights making a huge spectacle of me just landing off field because maybe my 40 y.o. Chotia 460B said "you know what, nuh-uh, not today".

The bigger killer though is I'm blind in one eye and my vision in the other is pretty bad and rapidly deteriorating, so there's a ticking clock involved, and even if I do get several thousand feet up in the air in person, I'm not going to see much more than a blurry mess by this point :-/ When I started in aviation 10 years ago watching ultralight videos, not a serious problem. Ten years later with what's left of my vision really going to hell in the last year, kind of a deal killer. Heck, I can probably fly with my eyes closed, but what's the point when you can't *see* anything anymore.
 
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