Pen for marking bolts i.e torqued

[VeeReihenmotor6]

Hi,

Any recommendations? Bought some "permenant" yellow markers from Amazon but they rub off easily.

This is to mark bolts so i can see I've torqued them and also for inspection later down the line.

Cheers

[cuprabob]

What about just using a dab of paint from a touch up pencil / brush.

[normalbloke]

[dudleybloke]

I use paint marker pens like this.

https://www.toolstation.com/markal-valve-action-pa...

[Chris32345]

Nail varnish?

[hidetheelephants]

dudleybloke said:

I use paint marker pens like this.

https://www.toolstation.com/markal-valve-action-pa...

These, they are a massive pain in the arse(they dry up, morons steal them to graffiti toilets/sniff the solvent/whatever) but they're the best thing for the job.

[VeeReihenmotor6]

Cheers some good ideas - nail varnish, with 3 females in the house that is the cheapest solution. I will give it a go.

[JerseyRoyal]

Aye, paint pens are the norm but a wee dot of nail varnish will probably work. You’ll need to prime it or it’ll flake off when it dries though

[Krikkit]

I use a cheapo milwaukee paint pen, was only a fiver and it's lasted 2 years so far

[VeeReihenmotor6]

Krikkit said:

I use a cheapo milwaukee paint pen, was only a fiver and it's lasted 2 years so far

That's what I have right now, yellow? I find no matter how much i shake it and press the nib in to get the paint out, that I don't get much out and it leaves a very faint mark that wipes off at a later date.

[TwinKam]

I've always used Tipex, latterly a Tipex 'pen', for everything from highlighting ignition timing marks and pointers (remember them?), track rods to ends (rotational reference during wheel alignment), angular tightening reference marks (eg +90*) etc

[normalbloke]

VeeReihenmotor6 said:

Cheers some good ideas - nail varnish, with 3 females in the house that is the cheapest solution. I will give it a go.

The type of product I posted an image of ‘torque seal’, is designed to do exactly what you asked in the OP. When a fastener is torqued and set, you run a line of this across the fastener. Any movement or change in torque will make the line shatter off. You the have an instant visual cue that something has moved. We used to use it on the Jetranger.

[Magicmushroom666]

I like these:
https://www.pentel.co.uk/product/pentel-micro-corr...

The tip is more like a valve, so as long as it is pushed down, you can squeeze the body to get plenty of liquid out and make a mark on whatever surface even if a bit dirty etc.

[richhead]

tourque seal, if the nut/bolt comes loose it breaks off, comes in all sorts of colours

[richhead]

see normalbloke beat me to it

[Hondashark]

Torque seal is good because even if it gets covered in dirt it sticks out so you can still see it. The down side is it can get knocked off by gravel/dead animals if its on the underside of a car/train etc.
So we mostly use paint pens, when it gets really mucky it's harder to see but you can torque check the bolt at 80% and re-mark it if needed.

[Tony1963]

The torque seal we’ve been using at work for the last few years sets like a ceramic substance: very hard, and needs a tap with a screwdriver blade to break it off to allow a socket to fit properly. A pain, but it very rarely comes away in service.

[hidetheelephants]

Tony1963 said:

The torque seal we’ve been using at work for the last few years sets like a ceramic substance: very hard, and needs a tap with a screwdriver blade to break it off to allow a socket to fit properly. A pain, but it very rarely comes away in service.

Given your charges spend all their time in the air trying to disassemble themselves it stands to reason you'd get the best goo for sticking things together!

[Hondashark]

I work on trains and the underneath gets battered with chunks of granite at 125mph.

[richhead]

normalbloke said:

The type of product I posted an image of ‘torque seal’, is designed to do exactly what you asked in the OP. When a fastener is torqued and set, you run a line of this across the fastener. Any movement or change in torque will make the line shatter off. You the have an instant visual cue that something has moved. We used to use it on the Jetranger.

Its what we use on race cars too, saves time when spanner checking.