Machinist blue layout fluid - video

[Jon]

Machinist blue layout fluid. By Artisan Makes. 7:03 video:

Previously:

93 Best Homemade Measuring Tools eBook
Simple depth gauge - video
Lathe tools from broken drill bits - video
Retractable brass scribe - video

[old_toolmaker]

I usually use a black marking pen for layout. I don’t think it the safest practice to be mixing volatile chemicals in the home shop.
For scraping of precision surfaces I like Prussian Blue.

[TheElderBrother]

This is excellent. I can't hit the thanks button hard enough!

[mwmkravchenko]

I usually use a black marking pen for layout. I don’t think it the safest practice to be mixing volatile chemicals in the home shop.
For scraping of precision surfaces I like Prussian Blue.

He's using ethanol. One of the safest thinners out there.
If you use WD40 you are using a more dangerous mix of acetone and cooking oil. Acetone like alcohol is easily absorbed through our skin. Acetone however is known to cause cancer if used without proper precautions.

[tomtool]

Dy-mark is available in Australia from Dy-mark (various colours) and also Blackwoods just to name a couple - Tomcat

[uv8452]

"Acetone however is known to cause cancer if used without proper precautions."
Germany has a 'MAK-Liste', which lists the max. permitted concentration of solvents (et al.) at a workplace. Acetone's value is 1200mg/m3 - which is much higher (means: safer) than other solvents used in workshops. Because of its high flammability Acetone is practically not in use anymore, though. MAK-Liste: Acetone is not known to be and not listed as a cancerogene.

[mwmkravchenko]

Maybe I am behind in my safety information. Now I have to look for the permissible solvents. Are you saying vapour concentration? Or liquid?

[uv8452]

You're not behind: other countries - other rules. vapor or liquid depends on the temperature: At 68 F a 'petri dish' of acetone will be evaporated within half an hour.
But by mixing and applying our machinist's blue we will be exposed to this just a few seconds. Not more than our wives doing their nails.

[Christophe Mineau]

Yes , great, this is also difficult to get here in France, appart from spray cans which I don't find to be convenient for the small parts I work with.
Nothing harmful here, alcohol and shellac is what we use every day (... well we should... ) in the wood shop .
I am really happy to learn this is that easy to make marking fluid, I think I already have the ingredients in the shop, will give it a try very quickly!
Thanks Jon for that finding!
(PS Jon, for once, I think you could win a tool of the week by proxy with this one !

[Jon]

Followup video: