I used to worry about that myself too,you know !
At first ,I thought : "
Oh ,comm'on you 're inhaling at least 1000x more
amount of brake pad dust & tire gum micro-particles every fuckin' day ,
since you live in an urban area .Let alone the rest of the urban airborne crap ".
Well, I was not actually satisfied by that ,
neither it gave any clues or definitive answer to my worries.
Later I thought : "
Nope ! The sticky herb act as a filter to those nasty metal micro-shavings .
Everything's cool ! "
But still I was not 100% confident about the health safety of these shavings .
That was before ...
Nowdays ,it has already became a part of the "ritual" .
I'm always wetting the threads before placing the cap.
How ?
A drop of water or tea (no sugar ,please )
or even some
freshly synthesized spit rubbed on the threads ,will do
( but at this case the sizzling sound and the smell of toasted lysozyme
& amylase may be some things that someone needs to get used to ,though ) .
Lubrication ,it is .
As also is important to get to know your cap.
Where it applies pressure at the tip.
Before inserting to / removing from the tip ,
press at those two (always opposite to each other ) "pressure points"
on the cap.
That will relief most of the
spring-like tension of cap ,at those points.
Slighty press the cap-thus temporarily deforming it - ,before inserting it on the tip.
That will greatly reduce the production of metal shavings .
Lubricate the threads &
-slightly -press the cap before inserting on or removing it from the tip .
I made those two things a part of the whole VC ritual.
'cause I had the same worries like yours .
I've seen great results -
regarding the degree of wear at the tip's threads - ,by doing so.
BUT IF...
you're still feeling insecure :
According to the OSHA for an 8 -hour shift ,
the limit of inhalling Ti dust ( ff it's fine enough ,it is considered as TiO2 )
is 15 mg / Cubic meter of atm. air .
Just a sec to make some calcs ...
- The whole tip weighs ~ 3 grams = 3000 mg .
- 3000 / 15 = 200 .
- 3 x 7 x 10 =210
Ok ,I'm back !
You will have to turn the
whole tip into fine dust ,
then disperse all of the dust in the air of a room
of 10 meters length ,7 meters width and 3 meters height,
and assuming that the dust never settles and new dust amounts are replacing the ones inhaled,
still you are allowed to work for an
eight hour shift ,
in that environment
without the use of any personal protective equipment .
For every productive day of your life !
https://wcam.engr.wisc.edu/Public/Safety/MSDS/Titanium.pdf
https://www.atimetals.com/Products/Documents/sds/EuropeanUnion/EU-EN/SAC/SAC020 Titanium Fines Saw Fines, Grinder Fines, Saw Swarf, and Sponge (-20) EU-EN Rev4.pdf
Cheers.