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Ignoring the top and bottom marks what's the votes for the middle one being a crack?
[url= https://live.staticflickr.com/65535/51875310063_ce1a26b8fe_c.jp g" target="_blank">https://live.staticflickr.com/65535/51875310063_ce1a26b8fe_c.jp g"/> [/img][/url][url= https://flic.kr/p/2n33wnD ]Scratch or crack.[/url] by [url= https://www.flickr.com/photos/stu-b/ ]multispeedstu[/url], on Flickr
Ooft! I vote crack.
Where on the frame is it?
Edit: on the second picture on your Flickr feed it looks more like option 3: gouge
Scratch
Looks a bit like a crack has started propagating round the tube from a scratch?
I was going to say scratch, but on closer examination I'm going for crack
deep scratch
Scratch, maybe.
Gash
Ravine
I'd go with scratch/gouge
Scratch
Tis but a scratch.
Cracks don’t start in the middle of a tube, most often from a weld that then propagates either further along the weld or across a tube.
Scrack!
Looks a bit like a crack has started propagating round the tube from a scratch?
That was my initial impression.
Logged with shop/manufacturers and marked ends so I can keep an eye on if it gets any bigger.
Bit disappointed no one has said it's a sticker.
I'm going for scratch, best fixed with a cracking sticker.
If in doubt, drill a hole from the other side and see if it's visible on the interior of the tube. If it's not, it's a scratch, if it is, it's cracked.
Corrosion pit.
Scratch. Stop chewing your frame.
Bit disappointed no one has said it’s a sticker.

An easy way to check is to put a slight over pressure in the frame and squirt soapy water on it.
Looks like a scratch from a Silky Bigboy tooth.
Probably a scratch. But you can always gently sand the area and check. Or get a shop to check
Looks like a scratch from a Silky Bigboy tooth.
The owner of the frame isn't to be trusted with anything that sharp. 🤣
get a shop to check
As I already said
Logged with shop/manufacturers
Only time and more riding it will tell.
You wouldn’t bet three cracks like that. Defo scratch.
Sand it down a bit.
yeah i think its a scratch
bit of wire wool/emery cloth on the central mark, I reckon it would loose the tail end that looks 'cracky'
Defo Woodworm. dont store this bike near other bikes as it spreads like.............. woodworm
end of discussion !
Just a flesh wound
Deep scratch, seems an odd place for a typical crack.
Most cracks I've found\checked on metal bike frames often have a step in one direction.. lightly run a fine point\blade over the width of the potential crack and often you will notice a directional up\down down\up step in either direction. Personally I've found it's very rare that both sides of a crack are completely level.
DIY dye-penetration test - run a bright colour marker pen across the area. Wipe the area with a rag soaked in meths. If the pen colour disappears, then it isn’t a crack.
Scratch. Look at the shape of it. Bike was probably moved around on it’s side, or in the back of a car while leaning against a sharp thing. Or bouncing on a rack next to another bike, or something. Is my best guess.
Best thing to do is to drill a good sized hole at the end of the longest line. If it turned out to be a crack, then you’ve just successfully placed it under house-arrest 😑
