Take your rod building to the next level with the CRB Rod Blank Deflection Tool (CRB-DFT). Engineered for precision, this shop-ready tool allows builders to perform expert side-by-side comparisons of rod blanks to detect even the smallest d...
Reviews
5.0
5 ratings
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Great!
This is a great tool for anyone that works with unlabeled rod blanks. It lets you compare unlabeled blanks against known spec blanks to help accurately judge the specs of the unlabeled rod. Works well with the CRB Deflection chart
D
Daniel · July 30, 2026
Great but not perfect
I love the rod blank deflection tool and I use it often as a rod designer for MAVRK Fly Fishing. But the tool isn't great when measuring rod action using the "string" test. As I pull on the string to get the tip vertical, the rod slips back. This tool needs an adjustable stopper plate at the butt of the rod to keep it in place. It also needs a loop (ring) so the string can pass through and come back to where I am standing, which is at the tip of the rod.