# K14. How to square up fins

**URL:** <https://forum.clcboats.com/t/k14-how-to-square-up-fins/40775>\
**Category:** Builder's Forum\
**Created:** [March 26, 2013, 7:28am UTC](https://forum.clcboats.com/t/k14-how-to-square-up-fins/40775 "2013-03-26T07:28:35Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Garrett\_Friedrichsen](https://avatars.discourse-cdn.com/v4/letter/g/f04885/32.png) [@Garrett\_Friedrichsen](https://forum.clcboats.com/u/Garrett_Friedrichsen)\
**Post date:** [March 26, 2013, 7:28am UTC](https://forum.clcboats.com/t/k14-how-to-square-up-fins/40775/1 "2013-03-26T07:28:35Z")

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My kit did not have holes drilled as the book states. &nbsp;Any tips on how to square up the fins?

&nbsp;

Squaring is tough because the SUP has no right angles to square from!

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**Author:** ![Jack\_Kantz1](https://avatars.discourse-cdn.com/v4/letter/j/45deac/32.png) [@Jack\_Kantz1](https://forum.clcboats.com/u/Jack_Kantz1)\
**Post date:** [March 26, 2013, 12:52pm UTC](https://forum.clcboats.com/t/k14-how-to-square-up-fins/40775/2 "2013-03-26T12:52:24Z")

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If I remember right, the center seam of the hull can be used. cut a piece of scrap the same size square as the distance between fins. mark the scrap piece on two parallel&nbsp;sides at its center, line marks up with center seam and your fins go on even with the other two sides.

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**Author:** ![Peter\_Shapiro](https://avatars.discourse-cdn.com/v4/letter/p/e480ec/32.png) [@Peter\_Shapiro](https://forum.clcboats.com/u/Peter_Shapiro)\
**Post date:** [March 26, 2013, 4:03pm UTC](https://forum.clcboats.com/t/k14-how-to-square-up-fins/40775/3 "2013-03-26T16:03:35Z")

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You can establish a center line on the bottom by stretching a string from the bow to midpoint of the stern (put a piece of tape on the under side of the stern and mark the midpoint of the stern on it). &nbsp;Put center lines on the front and back of the fin jig and line those up with the string. &nbsp;Use a small square to align the marks on the jig with the string. &nbsp;