General > General Technical Chat
Tricks of the Trade - knowledge for every day life
Cerebus:
On cleaning permanent marker off of things.
Alcohol usually does the trick, but sometimes there will still be a residual shadow left after the bulk of the ink is gone. I've successfully removed the shadows, without any apparent damage to the surface, by using a melamine sponge (sometimes sold as 'magic eraser' sponges or under a very similar name) with a little alcohol.
I've done this on second hand test equipment, that had asset numbers or department names in permanent marker, and I couldn't tell you now where the markings were from examining the kit as it is now.
[Sorry, I realise this has nothing to do with quibbling about 'laser' safety.]
Ranayna:
--- Quote from: Halcyon on October 31, 2020, 01:10:34 am ---Not so much electronics, but Fran's little trick for re-seating self-tapping screws by starting in reverse first until it finds the groove. So simple, yet effective.
--- End quote ---
At some point this became intuitive for me. I dont know if someone showed this to me or if i figured it out myself. But i remember several messes i made with self tappers in cheap plastic ;D
For similar reasons i also try to organise unscrewed self tappers in a way to be able to put them back into the same hole they came from. Especially cheap screws are so inconsistent that even if you hit the groove, you still do damage with another screw.
Cerebus:
A suggestion.
I was pleased to see this topic. A discussion that gradually gathered a collection of 'tips and tricks' sounded like an excellent thing. I could see how it might, in time to come, form the basis of a very useful repository of knowledge.
It seems to have been taken over for yet another disputation between the 'safety zealots' and the 'safety libertines'. I wonder if the members of both groups would consider:
1) Starting a new topic to debate the safety issues in, and having done so, taking that discussion there.
2) Once they have done that, deleting their own contributions on the subject from this topic to preserve its nature as a helpful repository.
Thank you for your consideration.
richard.cs:
--- Quote from: Cerebus on November 02, 2020, 02:49:58 pm ---Alcohol usually does the trick, but sometimes there will still be a residual shadow left after the bulk of the ink is gone. I've successfully removed the shadows, without any apparent damage to the surface, by using a melamine sponge (sometimes sold as 'magic eraser' sponges or under a very similar name) with a little alcohol.
--- End quote ---
I am familiar with the residual shadow problem, but not the 'magic eraser' - I shall have to try it.
--- Quote from: Ranayna on November 02, 2020, 02:55:14 pm ---
--- Quote from: Halcyon on October 31, 2020, 01:10:34 am ---Not so much electronics, but Fran's little trick for re-seating self-tapping screws by starting in reverse first until it finds the groove. So simple, yet effective.
--- End quote ---
At some point this became intuitive for me. I dont know if someone showed this to me or if i figured it out myself.
--- End quote ---
Same, I do this, but I can't remember when I started. And not just on self tappers either, any awkward screw that "wants" to cross-thread.
DrG:
There may be a few people who still don't know this one :)
Use your digital camera (night setting if you have it), to see if your IR LED (remotes etc...) is working.
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