BUILD: Marking Knife - The Challenge Tree Contest @TabLeft

Uploaded March 2015 | Updated September 2026, 2 weeks ago

Making a marking knife from and old tree branch and an old reciprocating saw blade.

This is an entry into the DominicsWoodworks Challenge Tree Contest. youtu.be/Qp9U4XjeHk8

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BUILD: Marking Knife - The Challenge Tree Contest

$BUILD: Hollow Acrylic Prism I want to do some experiments that involve testing the refraction of various solutions, so I needed a hollow acrylic prism. Rather than buy one I figured why not make one. This was made from a scrap of 1/16th acrylic and solvent welded with Dichloromethane. The plug was made from a standard hockey puck. The video at the end was of the prism filled with plain water but different liquids would produce different results. Check us out at Home Page : http://tableft.com Instagram: http://goo.gl/bbJ4nL Twitter: http://goo.gl/yy3lqm Facebook: http://goo.gl/Ke5UMM Google+: http://goo.gl/uaxVLk Pinterest: http://goo.gl/ouAmC2 Instructables: http://goo.gl/R7T612 Help support the show Shirts: http://goo.gl/7JG8it Patreon: http://goo.gl/GP91bZ Paypal: http://goo.gl/n6fSGx Amazon Affiliate Link: http://amzn.to/1RE5k5U Tool Links: http://goo.gl/3Q6XEk$

TIP: Easy Arc Radius (Intersecting Chords Theorem)