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Making ultramarine
From Wikipedia:

[quote]
The preparation is typically made in steps: The first part of the proces ...
13-10-2019 at 17:47
by: Twospoons
Ebay - deals too good to be true
Its bizarre that all the other listings from this guy are the same price. Its also a bizarre range o ...
13-10-2019 at 16:23
by: Twospoons
Ebay - deals too good to be true
I see your point and its a good one, but I can also see how competing Ebay sellers might abuse this ...
13-10-2019 at 13:39
by: Twospoons
What temp is considered super heated steam and what materials will withstand these conditions?
I was referring to the pressure. Coffee is ideally brewed at 95C. But there are also single tank esp ...
9-10-2019 at 13:02
by: Twospoons
What temp is considered super heated steam and what materials will withstand these conditions?
I would try to use the same material throughout, no matter what you choose, otherwise galvanic corro ...
8-10-2019 at 20:22
by: Twospoons
Path to tin(IV) sulfide?
Even simpler you can use CaS instead of FeS. Goes by the name "Lime Sulphur" in the fungicide/bacter ...
28-8-2019 at 21:54
by: Twospoons
Could a thermal lance with Aluminium fuel be operated with compressed air?
Sure, but if you turn off the arc, does the steel keep burning in a stream of cold air? AFAIK you n ...
28-8-2019 at 17:37
by: Twospoons
Could a thermal lance with Aluminium fuel be operated with compressed air?
Given that industry is always looking for the cheapest way to do everything, if compressed air worke ...
28-8-2019 at 14:44
by: Twospoons
Li ion batteries same size but different capacities?
The cathode chemistry makes a big difference - it can be optimised for capacity or current delivery. ...
31-7-2019 at 22:15
by: Twospoons
Which number you like more: 1.99 vs 2.01?
[rquote=617281&tid=151711&author=SWIM]I really prefer 127/64ths.

Decimals bum me out.

...
23-7-2019 at 21:36
by: Twospoons
Night Vision Project
[rquote=617328&tid=151700&author=VSEPR_VOID]This is as much a learning extercise as it is a ...
10-7-2019 at 15:47
by: Twospoons
Night Vision Project
And accelerometers would be nowhere near accurate enough. Inertial systems always drift over time.
8-7-2019 at 00:17
by: Twospoons
Night Vision Project
Well, its the only place i've ever worked where I was wearing grade 5 ear protection while using a c ...
7-7-2019 at 21:09
by: Twospoons
Night Vision Project
The fun part is going to be the shock loading from firing the rifle. In a past life I worked at the ...
7-7-2019 at 12:37
by: Twospoons
UNBELIEVABLY CHEAP microscopes
If it really were a firesale you would have probably received a lump of melted plastic for that pric ...
25-6-2019 at 20:57
by: Twospoons
Non Newtonian mixtures using fumed silica
You will have trouble if your explosive round gets classified as "armor piercing".
20-6-2019 at 17:31
by: Twospoons
Does anyone have a homemade H2 generator or advice on makong a simple setup?
I've used NaOH + Al to make floaty balloons for my kids - best was to use chunks of AL to keep the r ...
19-6-2019 at 15:06
by: Twospoons
UNBELIEVABLY CHEAP microscopes
The asking price is less than what it would cost to ship the thing. Its clearly a scam. I have bette ...
13-6-2019 at 21:10
by: Twospoons
UNBELIEVABLY CHEAP microscopes
The usual rule applies - " if it seems too good to be true ...."
13-6-2019 at 17:43
by: Twospoons
Motherboard RAM plastic, IDE plastic, PCI plastic
https://www.digikey.co.nz/products/en/connectors-interconnects/card-edge-connectors-edgeboard-connec ...
11-6-2019 at 16:07
by: Twospoons
Motherboard RAM plastic, IDE plastic, PCI plastic
LCP is the likely material (liquid crystal polymer). It is rigid and good for moulding accurate deta ...
6-6-2019 at 17:12
by: Twospoons
The moment (or moments) that made you realize you had a passion for chemistry
No watershed moment for me. I've just always been interested in science and engineering - right from ...
27-5-2019 at 14:07
by: Twospoons
H2O2 as O2 source for propane/acetylene torch?
[rquote=613572&tid=150451&author=RogueRose] I also have a fridge compressor that will do 60 ...
26-5-2019 at 12:34
by: Twospoons
Making Aluminum (cuttings) for easier milling of Al powder
If you are going to use a saw like that it would be worth investing in a blade intended for cutting ...
20-5-2019 at 14:18
by: Twospoons
Building an O2 concentrator & N2 & argon extractor
I thought the chiller would be more convenient, wasn't considering cost effectiveness
15-5-2019 at 20:41
by: Twospoons
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