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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
Identification of a mystery metal
[rquote=611456&tid=149463&author=ScienceHideout][rquote=611439&tid=149463&author=Old ...
3-5-2019 at 21:53
by: OldNubbins
Identification of a mystery metal
Regular 50/50 or 60/40 solder (no rosin core) is used, nothing special. Melting point around 400°. ...
3-5-2019 at 15:30
by: OldNubbins
Identification of a mystery metal
Those are either solder bars/sticks for making stained glass windows or babbitt in extruded wire for ...
3-5-2019 at 12:13
by: OldNubbins
OC experiments that can be done without lab
Select the text shown below in blue. Right click and select the option I have highlighted in yellow ...
27-3-2019 at 03:20
by: OldNubbins
Botched a Simple Synth :(
You need a significant excess of the dichlor. Did you account for the likelihood that the pool tabs ...
9-3-2019 at 04:28
by: OldNubbins
Pump oil for Rotary Vane - What grade?

[img]https://www.ajvs.com/images/edwards/Edwards_Oil_Chart.jpg[/img]
14-1-2019 at 04:44
by: OldNubbins
Steel RBFs
Test for Monel:

Depending on the amount of copper in the alloy, Monel should be somewhat magnetic ...
7-1-2019 at 13:50
by: OldNubbins
Steel RBFs
The bases appear to be stamped "18-8 stainless steel". Is the 'M' on the flask? They could be made o ...
5-1-2019 at 01:31
by: OldNubbins
Large lab
42






....and thanks for all the fish......
26-12-2018 at 16:41
by: OldNubbins
REMINDER: It's cold outside!
[url=https://youtu.be/ZXgtKUpu4Sw]Couldn't resist[/url]
10-12-2018 at 10:32
by: OldNubbins
FBI Call: Need to Vent
[rquote=553038&tid=99306&author=JJay]The problem is not whether such and such explosive devi ...
23-11-2018 at 00:35
by: OldNubbins
High Test Hydrogen Peroxide (catalytic)

[url=https://www.cdc.gov/niosh/face/pdfs/09ca004.pdf]Do you really want to combine those in a seal ...
27-10-2018 at 17:16
by: OldNubbins
Fitting a Ground Glass Joint to a Steel Plate
I believe ground glass tapers are 1:10 which is about 5.72° total included angle. There are tapered ...
26-10-2018 at 19:51
by: OldNubbins
Proper way to use a dessicator
I use silicone dielectric grease from the auto parts or home improvement stores.
4-10-2018 at 23:09
by: OldNubbins
Mercury Sulfide Being Sold as Medicine for Children
Caveat emptor

If you cannot 'caveat' then maybe the world would be a better place?

We managed ...
4-10-2018 at 23:05
by: OldNubbins
Water desalination in deep sea water - using pressure of the deep - possible?
I use these Firestone airbags in industrial equipment. This is a suggested use by the manufacturer. ...
17-8-2018 at 11:44
by: OldNubbins
Thinning solid fat/oils for injecting (venturi air suction) into forge?
Try rendering the thicker fats and oils containing solids several times. Heat up low and slow for se ...
23-7-2018 at 21:10
by: OldNubbins
Summer & collecting purified water from dehumidifier & AC
I guess it depends on how much you value your time.

My salary is far lower than the value I place ...
9-7-2018 at 10:03
by: OldNubbins
interesting Dateline tonight, odd chemical sale situation
It used to be that networks were able to operate their news programming at a loss because their ente ...
26-6-2018 at 11:11
by: OldNubbins
Most potent smokescreen chemical?
Solvent dyes, potassium chlorate, sugar, and if I remember right, some magnesium carbonate to cool t ...
21-6-2018 at 16:18
by: OldNubbins
Making A Test Tube Rack -- Evenly Spacing Holes
Start from the center, work your way out.

Edit:

To be clear, there are infinite approaches to ...
21-6-2018 at 16:06
by: OldNubbins
Nickel Chloride From Nickel and Ferric chloride
[rquote=521917&tid=83848&author=NEMO-Chemistry]One question i get conflicting answers on is ...
15-6-2018 at 19:30
by: OldNubbins
Nickel Chloride From Nickel and Ferric chloride
[rquote=521840&tid=83848&author=NEMO-Chemistry]
do you have any tips on what kind of graph ...
15-6-2018 at 15:44
by: OldNubbins
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