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Machinist blue layout fluid. By Artisan Makes. 7:03 video:
https://www.youtube.com/watch?v=TjWJZJ_tB_Q
Previously:
93 Best Homemade Measuring Tools eBook
https://www.homemadetools.net/forum/...360#post181382
https://www.homemadetools.net/forum/...328#post181246
https://www.homemadetools.net/forum/...294#post181084
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.
This is excellent. I can't hit the thanks button hard enough!
He's using ethanol. One of the safest thinners out there.Quote:
Originally Posted by old_toolmaker
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.
Dy-mark is available in Australia from Dy-mark (various colours) and also Blackwoods just to name a couple - Tomcat
"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.
Maybe I am behind in my safety information. Now I have to look for the permissible solvents. Are you saying vapour concentration? Or liquid?
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.
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 !
Followup video:
https://www.youtube.com/watch?v=W8pRv-sx4IA
Yes, I tried the recipe: 150ml ethanol, 1 teaspoon shellac; when dissolved, I added a 'tip of knife' of deep blue fabric dye powder to 50ml of the ethanol-shellac mixture.
Applied with a fine hair brush. Dried within 1 min maximum. Adhesion is good. Easy to remove with ethanol. No rinsing after use necessary: The brush's hairs don't stick together after drying. Cost: 100g shellac at 9€.
I would give away 8x10g portions of shellac - within Europe.
Ulrich