alt Hacker NewsThis is actually a tool used in construction. A chamber filled with chalk and a coiled line. You hook the line to one end of your item, pull the chamber across, make it tight, snap the line.
https://www.homedepot.com/p/Milwaukee-100-ft-Bold-Line-Chalk...
Replies
UltraSane • today at 1:09 PM
Using one of these to snap a perfect reference line is extremely satisfying.
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The Tajima ones [0] are phenomenal, though the hook leaves a longer blank stretch than I'd like. They make a super nice snap knife too. Highly recommend Tajima for anything they make. Annoyingly, they don't sell a rip saw, only crosscut.
[0] https://www.tajimatool.com/product_category/mt/#chalk-rite