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Explaining your chemistry hobby
I suppose it is technically electroplating but I use the electroforming term because the deposit is ...
19-8-2020 at 17:10
by: OldNubbins
Explaining your chemistry hobby
I think most people have a shallow understanding of chemistry. I usually respond by explaining they ...
19-8-2020 at 12:21
by: OldNubbins
Most toxic compound OTC?
[rquote=643187&tid=155450&author=karlos³]I actually have done bioassays with the strychnine ...
16-8-2020 at 11:35
by: OldNubbins
What’s banned in CA?
Not COVID-related, it was enacted in 2019 but stores were allowed to sell what stock was on hand. It ...
12-8-2020 at 15:05
by: OldNubbins
What’s banned in CA?
Cannot get denatured alcohol here.... yes, denatured alcohol. Something to do with reduction in VOC' ...
11-8-2020 at 21:20
by: OldNubbins
Possibility of buying the following substances?
Friend of mine has a large chunk of lignite and the last house I lived in used to burn coal in the e ...
7-8-2020 at 15:55
by: OldNubbins
Very dizzy after melting sulfur - what happened?
[rquote=641751&tid=155890&author=Draeger]
I didn't get numbed, though, so I guess that mean ...
29-7-2020 at 17:18
by: OldNubbins
My fume hood racks

Two nuts brazed at right angles with threaded rods mounted to back of hood with right angle stando ...
26-7-2020 at 00:52
by: OldNubbins
Homemade and Repurposed Lab Gear
Probably an electric bunsen burner

[url]https://www.coleparmer.com/p/electrothermal-electric-buns ...
12-7-2020 at 15:36
by: OldNubbins
What kind of flange is this? telling schott from something else.
Anything like this?


[file]82142[/file]

This is a QVF Supra coupling
10-7-2020 at 12:06
by: OldNubbins
Societal collapse: What do you think would be most needed?
[rquote=640309&tid=155761&author=SWIM]

You could probably get by with:
bidets
sulfa dru ...
10-7-2020 at 10:54
by: OldNubbins
Lab Stands + Questions
I used threaded rod and some nuts brazed at right angles. Cost about $10-15 in total. The support bu ...
7-7-2020 at 08:27
by: OldNubbins
Calcium nitrate + Copper Sulfate double displacement not happening....
My hardware store carries the Hi-Yield brand which I believe is relabeled Yara. I used to go the sam ...
2-7-2020 at 20:16
by: OldNubbins
Buchi Screw Wheel 00565 needed!
Looks like this thread was necrotized, but for future reference, I have some replacement gears I can ...
22-6-2020 at 12:37
by: OldNubbins
Chinese rotavaps?
I should add that Dr. Bob helped me put together a Buchi rotavapor recently. I learned how to repair ...
17-6-2020 at 14:01
by: OldNubbins
Chinese rotavaps?
Thick neck?

[img]https://www.fantasysp.com/images/nfl/431421.png.pagespeed.ce.ue7joJAyzn.png[/img ...
16-6-2020 at 23:40
by: OldNubbins
Pretty Pictures (2)
Good friend gave me this jar about 6 months before he passed. Told me, "Here, can you do anything wi ...
7-6-2020 at 09:45
by: OldNubbins
3D printing useful parts - anyone doing this? I'd like to print GL45 bottle caps if possible
Look into polyphenylene sulfide (PPS) and polyvinylidene fluoride (PVDF)

You will need an all-met ...
7-6-2020 at 08:15
by: OldNubbins
3D printing useful parts - anyone doing this? I'd like to print GL45 bottle caps if possible
I just got an old Makerbot up and running again. So far I have printed some gears and a bushings for ...
6-6-2020 at 09:57
by: OldNubbins
KOH made my ethanol turn yellow ?
Try diluting to 40-50% and freezing. The fusel oils should start to separate and float to the surfac ...
29-5-2020 at 03:00
by: OldNubbins
KOH made my ethanol turn yellow ?
From my experience making a whiskey-like drink from straight sugar, especially with turbo yeast whic ...
28-5-2020 at 19:16
by: OldNubbins
Ika-combimag ret stirring problems
R2 and R3 are feeding the phototransistor and one of them appears chipped in the photo, and with the ...
26-5-2020 at 14:23
by: OldNubbins
Science equipment looking for a home
[rquote=635511&tid=15667&author=Dr.Bob]I just got another Variac fixed with help from anothe ...
19-5-2020 at 20:57
by: OldNubbins
COVID-19 heat resistance ?
If life is an operating system then a virus is a batch file.
24-4-2020 at 01:18
by: OldNubbins
Catalyst & rare chemicals for sale (40% discount from Sigma or Ficscher pricing)
I've heard that legality is inversely proportional to the number of instances and variations of the ...
23-3-2020 at 11:37
by: OldNubbins
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