bestine is a solvent, and must be treated as such ...
the 'oily' residue on the parts is a wax, not an oil ..
an alternative [safer] is non acetone nail polish remover, still a solvent , but much milder
Maxman,
If the bestine is removing contaminants prior to painting and those contaminants would affect the quality of your paint job (particles, uncured paint, etc.) then I would be hesitant to the possibility of re-introducing them to the surface of your 3D-printed part using pre-used solvent.
Tom
https://tstage9.wixsite.com/nyc-modeling
Time...It marches on...without ever turning around to see if anyone is even keeping in step.
So, okay, it is bad poo.
Can what I don't use (basically the items get a bath in it) be put back into the can with out contaminating/diluting the original stuff?
Alternately, what can be used in its place?
After reading the safety data sheet for heptane, I would not want to have that stuff in my home. It´s highly flammable, skin irritating, aqua-toxic, and can be fatal when swallowed or inhaled.
No, thank you!
Happy times!
Ulrich (aka The Tin Man)
"You´re never too old for a happy childhood!"
Sir, you are correct. They state a gas or a liquid can be a solid. I took chemistry, organic chemistry and biochemistry and this is the first I'm hearing of this.
If I had a well, I wouldn't be dumping heptane on the ground.
Henry
COB Potomac & Northern
Shenandoah Valley
BigDaddy maxman Under the disposal section it says Bestine is not classified as a hazardous waste. That's because the EPA says a hazardous waste must be a solid. NIOSH: The recommended airborne exposure limit is 85ppm averaged over a 10-hour workshift and 440ppm, not to be exceeded during any 15 minute work period You can't smell it until 230 ppm Toxic to aquatic life. It has a very low flash point 27 F. Another reason not to pour it down the drain, as it will float on top the water.
maxman Under the disposal section it says Bestine is not classified as a hazardous waste.
That's because the EPA says a hazardous waste must be a solid.
NIOSH: The recommended airborne exposure limit is 85ppm averaged over a 10-hour workshift and 440ppm, not to be exceeded during any 15 minute work period
You can't smell it until 230 ppm
Toxic to aquatic life.
It has a very low flash point 27 F. Another reason not to pour it down the drain, as it will float on top the water.
According to what I found in your link labeled "hazardous waste", hazardous waste CAN be a liquid.
State regulatory requirements for generators may be more stringent than those in the federal program. Be sure to check your state's policies.
RCRA states that "solid waste" means any garbage or refuse, sludge from a wastewater treatment plant, water supply treatment plant, or air pollution control facility and other discarded material, resulting from industrial, commercial, mining, and agricultural operations, and from community activities. Nearly everything we do leaves behind some kind of waste.
It is important to note that the definition of solid waste is not limited to wastes that are physically solid. Many solid wastes are liquid, semi-solid, or contained gaseous material.
Better to be safe than sorry...
Marlon
See pictures of the Clinton-Golden Valley RR
maxmanUnder the disposal section it says Bestine is not classified as a hazardous waste.
tstage It's basically hexane (non-polar solvent) so it can't really be disposed of down the drain. Here's an MSDS sheet on it: http://archpdfs.lps.org/Chemicals/Solvent-and-Thinner_Bestine.pdf A glass or metal container would work well for storage or disposal. Nalgene is also good but is more expensive. Tom
It's basically hexane (non-polar solvent) so it can't really be disposed of down the drain. Here's an MSDS sheet on it:
http://archpdfs.lps.org/Chemicals/Solvent-and-Thinner_Bestine.pdf
A glass or metal container would work well for storage or disposal. Nalgene is also good but is more expensive.
Just took a look. Under the disposal section it says Bestine is not classified as a hazardous waste.
Is there anything less toxic to use for this purpose?
It seems to be recommended that 3D printed items be cleaned with Bestine prior to painting. Never having used this before, I have the following questions.
May the Bestine be poured into any convenient container or does it have to be something special (metal/plastic/glass)?
After using the Bestine, can the remainder be poured back into the can, or does it have to be disposed of due to contamination?
Any special disposal requirements, or can it be poured down the drain or dumped in the back yard?
Anything else I need to know?
Thanks
Maxman