![Is there a way to tell if a crack is in the paint or in the frame? I'm nervous this hairline crack might be a big issue : r/TrekBikes Is there a way to tell if a crack is in the paint or in the frame? I'm nervous this hairline crack might be a big issue : r/TrekBikes](https://external-preview.redd.it/UTbk4eoYwUgpSnRVw_lv7cWp9sYPIif2rG_J8hcdtHo.jpg?width=640&crop=smart&auto=webp&s=274587903282c7e8c1000f921c8665ce21e65b3f)
Is there a way to tell if a crack is in the paint or in the frame? I'm nervous this hairline crack might be a big issue : r/TrekBikes
2019 FEX 9.7 hairline cracks in seat tube: just paint or frame cracking? | Mountain Bike Reviews Forum
![Cracked carbon? Hairline crack/scratch on carbon frame just above the front derailleur. Would like to get your views before getting a professional opinion. : r/bikewrench Cracked carbon? Hairline crack/scratch on carbon frame just above the front derailleur. Would like to get your views before getting a professional opinion. : r/bikewrench](https://preview.redd.it/t0kp06fjta651.jpg?auto=webp&s=9ea673a03c155bdf08f2dabc021f3491b8cec850)
Cracked carbon? Hairline crack/scratch on carbon frame just above the front derailleur. Would like to get your views before getting a professional opinion. : r/bikewrench
![Carbon fibre frame hairline crack noticed below seatpost. - Australian Cycling Forums - Bicycles Network Australia Carbon fibre frame hairline crack noticed below seatpost. - Australian Cycling Forums - Bicycles Network Australia](http://i1161.photobucket.com/albums/q515/eeiko321/photo1copy3.jpg)