21 Sep
2010
21 Sep
'10
12:42 p.m.
1) You have ot
dispmantle the meter to change the battery=2C and it's=20
assembeled with self-tapping screws going into the plastic case. I don't=
=20
know how many insertions they will stand.
=20
---snip---
=20
Ahh
Something I know that Tony doesn't. I work with a lot of things that are wood and
have screws that=2C if screwed in and out too many times=2C
will end up with holes that don't hold the screws any more.
Similar problem to the plastic and self tapping screws.
I was shown a trick by an old wood worker years ago
to keep from cutting new threads.
You place the screw into the hole and while holding light
pressure=2C rotate it backwards with the screw driver.
At one point in rotation=2C it will kind of pop down. I don't
know how else to describe this but it is a feel thing.
It's very distinctive when you know what to feel for...
I didn't mention it because I thought it was well-known and it's
something I do without thinking about it. In the same way that I always
tightne the screws evenly in a diagonal pattern (as one manual put it
'like torquing down the cylinder head on an engine) even when it's not
strictly necessary. Or the faxct that I know the diffeence between
Phillips and Pozidriv and use the right screwdriver.
Then=2C screw the screw in. It will now follow the
old threads.
On the plastic with thread cutting screws=2C use very light
touch and carefully screw in. It will bind if not aligned well.
Of course=2C if the hole has already been abused many times=2C
this doesn't work as well.
However, even with this trick, there is still some wear when you insert
and rtemve the screw. You'll get more insertion/revmoval cycles if you
avoid recutting the thread each time, but it may not be that many.
Personally, if I am going to spend the money and get a high-end
instrument, I would expect it to be made well..
-tony