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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][/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
Reaction skill tree
p + p → [sup]2[/sup][sub]1[/sub]D + e[sup]+[/sup]+v[sub]e[/sub]
12-3-2020 at 19:45
by: OldNubbins
Rosco Bodine has been banned
The internet has perverted the meaning of free speech. It does not mean free and equal access to you ...
11-3-2020 at 00:07
by: OldNubbins
My daughter is breeding flies - and the smell is awful! Help!
What about venting the box through 16-20 vertical ft. of black ABS pipe? You can tuck it up under a ...
4-3-2020 at 12:50
by: OldNubbins
Bubbling dry HCl gas through a extract
[rquote=629515&tid=11219&author=draculic acid69]HCl +Al = definitely large amounts of HCl ga ...
14-1-2020 at 21:21
by: OldNubbins
What is wrong with MDMA production nowdays?
This is the hardest "two trains leave a station" problem I have ever seen...
13-1-2020 at 14:34
by: OldNubbins
Magpie has died
All I know of Magpie lives in my imagination, fed by words on a screen. I did not expect to feel as ...
12-12-2019 at 21:18
by: OldNubbins
Not so secret Santa thing
Category 3

The less I know about something, the greater the opportunity to learn.
5-12-2019 at 14:16
by: OldNubbins
Sodium Borohydride Group Buy
15-10-2019 at 00:34
by: OldNubbins
Brand new JJ-1 Over Head Laboratory Mixer speed cntrol not working... Help diagnosing problem please?
Sounds like an issue with the trim pots. I attached an image with a circle around a bad solder joint ...
14-10-2019 at 10:07
by: OldNubbins
My copper waste solution does not want to clear up
I second this - also have used leftover plaster, epoxy, grout, anything that cures/hardens.
11-9-2019 at 06:27
by: OldNubbins
Identification of a mystery metal
[rquote=611459&tid=149463&author=elementcollector1][rquote=611456&tid=149463&author= ...
3-5-2019 at 21:59
by: OldNubbins
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