4 ms·
Slightly off topic, but if you ever write on a whiteboard with a sharpie, you can write over the text with an erasable marker and then wipe it away.
by firefax 2y ago
Slightly off topic, but if you ever write on a whiteboard with a sharpie, you can write over the text with an erasable marker and then wipe it away.
- brudgers 2y agoIf you want to remove Sharpie, use IPA...isopropyl alcohol...India pale ale remains useless.
- echelon 2y agoIsopropyl removes all inks and glues. It's incredible. It's also fantastic to wash your hands with when doing cell and tissue cultures and trying to avoid contamination.
- j_bum 2y agoIdeally used to sterilize while gloves are on your hands… be mindful of your skin microbiome!
- Two4 2y agoIt's also similarly great for killing braincells when auto-applied orally
- dreamcompiler 2y agoNo. You're thinking of ethyl alcohol. If you ingest isopropyl alcohol you're gonna have a bad day. Oh and make sure the label on the ethyl alcohol does not contain the word "DENATURED." That's code for "tastes like shit and makes you sick."
- zdragnar 2y agoWell, if the stated goal was to kill brain cells, I'm sure either will get you there
- swe02 2y agoIsopropanol is relatively safe to drink in small amounts (single digit mL). It's only about 2x stronger than ethanol, and your liver metabolizes it to acetone, which is safe. Denatured alcohol contains methanol, which is way more dangerous since you metabolise it to formaldehyde. Source: I unknowingly got drunk on IPA fumes before work one time and wrote some really bad code
- dreamcompiler 2y agoMethanol is indeed quite toxic but it is not the only denaturant. There are many others [0]. When methanol is used as a denaturant, special labeling is required [1]. Most of the denatured ethyl alcohol I've seen in pharmacies in recent years has not contained methanol but merely bittering agents, because methanol is so dangerous. [0] https://www.govinfo.gov/content/pkg/CFR-2003-title27-vol1/xml/CFR-2003-title27-vol1-sec21-151.xml https://www.govinfo.gov/content/pkg/CFR-2003-title27-vol1/xm... [1] https://www.federalregister.gov/d/2016-20712/p-284 https://www.federalregister.gov/d/2016-20712/p-284
- MathMonkeyMan 2y agoYour pale ale clearly isn't strong enough!
- dlcarrier 2y agoI use hand sanitizer, so an alcoholic beverage might work, although it's significantly diluted.
- kazinator 2y agoI second that. I discovered that IPA dissolves sharpie resin when doing DIY circuitboards via toner transfer. When you do toner transfer, you can use a Sharpie to fix up imperfections in the artwork before doing the etching. After the copper is etched, you remove the ink. The first time I did that, I tried IPA first, and that took off the Sharpie touch ups, not doing anything to the laser printer toner. Next up, acetone: swoosh, clean copper in one wipe.
- fahrnfahrnfahrn 2y agoYou can do the same with a Sharpie. All inks contain a solvent for their pigment, so you can use the same marker to remove the same ink. Just mark over it and immediately wipe it off.
- BleakButBold 2y agoEven better, sunscreen (I just use old, expired ones). Don’t know why, but it does a great job.
- LeoPanthera 2y agoThis works because the solvent base for the ink is alcohol, so a much simpler method that doesn't waste ink is to use a small spray bottle of isopropyl alcohol. Ideally 99/100%, if you can get it. (Try eBay.) This doubles up as an effective whiteboard cleaner.