Hmm Liquinox page says
Clearly your job gets messy Daniel 🙂. Should clean records well. Nasty stuff in concentrate though...
Clearly your job gets messy Daniel 🙂. Should clean records well. Nasty stuff in concentrate though...
Haha, Bill, that stuff is pretty benign! It's an industrial cleaner from folks who do this stuff on billions of parts. Leave it up to someone else to repackage it as a boutique product for a niche market. 😉
The rinse is critical, depending on whether nanometers of residue matter. We do two ultrasound baths for when it matters: one with the detergent in proper concentration, one for final rinse. We just hold the parts under the tap to do the bulk rinse.
Remember, for most of my stuff, microns is a large dimension. 😉
The rinse is critical, depending on whether nanometers of residue matter. We do two ultrasound baths for when it matters: one with the detergent in proper concentration, one for final rinse. We just hold the parts under the tap to do the bulk rinse.
Remember, for most of my stuff, microns is a large dimension. 😉
Anything rated 'Eye damage 1' is probably too dangerous for me to be near (and noting the fact that petrol is pretty evil stuff which shouldn't really be allowed near untrained people).
Dangerous eye damage? There was the fellow who took apart a microwave oven and modified the RF section to be modulated by an audio signal. He placed this behind a bit of metal window screening. The idea being it heated the air directly and the resulting sound went from almost DC to well into the ultrasonic!
Scott, if you send me your current shipping address I am sure I can find one for you! 🙂
Scott, if you send me your current shipping address I am sure I can find one for you! 🙂
Off topic to telescopes, but for economy shipping (well anything, they've expanded to commercial and stuff) there's this - I've not used it but heard good things about it:
The On-The-Way Delivery Service | Roadie
I used the ferric oxide and a can of powdered aluminum my father got from his lab to make an awesome thermite bomb.
My favorite prank explosive was nitrogen triiodide, easy to prepare in the school chem lab from iodine and ammonia. Makes a hell of a noise, accompanied by some very hard to clean stains.
The attempt to do the more advanced nitrocellulose from cotton balls and a mixture of fuming nitric and sulfuric acid ended up when the principal was scared shitless by a big fireball under his office window. Two weeks suspension and no longer open access to the chem lab, too bad, I went to exploding electrolytic caps in the physics lab.
Yup we did the contact explosives. They never locked the windows to the chem lab prep room and the keys were always in the same place. Mind you my science teachers generally encouraged that sort of thing. These days science teaching is far too safe for my liking.
Yes, nitrogen triiodide is lots of fun... We used to coat lots of things with it at school too!
Bill - Yes, no fun at all any more when you can explode the odd thing or two...
Bill - Yes, no fun at all any more when you can explode the odd thing or two...
A favorite of ours, I wasn't the chemist but the iodine and powdered aluminum made a cloud of purple smoke that filled an entire floor of our dorm. Then there was the mercury fulminate drying on someone's desk under a tensor lamp that turned the lamp into shrapnel and permanently damaged my right ear.
We also had someone make a fertilizer bomb in an empty 2lb. can of Nestles Cocoa. He went on to poison all the pigeons around our dorm with arsenic and got the next day removal by MIT. Just like in the movies he never existed.
At that time (8th grade) I was committed to get into chemistry (BTW, my first career plan was to be a tramcar driver). The nitrocellulose incident cut it short and the electrolytic caps explosions fun decided for an EE career. That actually never really happened, silicon device engineering, then software won the game, set and match.
I wanted to be an astro-physicist but hit a wall on the math. I was befriended by someone that pushed me to EE. He was a genius that disappeared without graduating. I've been disappointed that several absolute genius friends that I had don't show up anywhere on the web while at least one goof is the CTO of a major chemical company. I understand that women often change their names so it's hard to track old acquaintances.
Never owned one but the university I attended had several of the small ones (3.5"? I don't remember now) for planetary observation. Nice bit of kit, though wasted on second year undergrads.
Now a buddy of mine worked at the McLaughlin Planetarium at the Royal Ontario Museum. A Zeiss planetarium projector is an amazing instrument. My friend actually worked the Laserium show, programmed and operated the analog synthesizers that drove the lasers to create images on the planetarium ceiling. After shows we would hang out blowing smoke (not always tobacco) into the air to create solid shapes made by the lasers. I think smoke anywhere near the projector is frowned on, but we were young and Pink Floyd was on the sound system.
Same here. My last email from him is 6 months old. I left a MP to John Curl, asking this same question, but no answer neither.
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