Chuck:
A Spartite plug can be great, but there are a couple drawbacks.
First, even after being well-lubed when created, the first time you pull the
mast the plug will hang onto the partners a bit before it “lets go.” It can be
unnerving when a large mast jumps like a pogo stick. Second, stepping the mast
with the plug in place requires you to line everything up perfectly. If you’re
off at all, it won’t want to go in. This can be especially annoying when
you’re paying for a crane and have impatient people waiting. To address the
second drawback, I removed my Spartite plug after the first season (using KY to
slide it off the bottom of the mast). I then cut it in half, and cut one of
the halves into quarters. Now, when I put the mast up, it is set into the
partners without the plug. I then pound my three Spartite “shims” into place
with a rubber mallet and seal the seams. Works great.
Matt
Erie, PA
C&C 42 Custom
From: CHARLES SCHEAFFER via CnC-List <cnc-list@cnc-list.com>
Sent: Wednesday, July 16, 2025 7:47 PM
To: CNC boat owners, cnc-list <cnc-list@cnc-list.com>
Cc: CHARLES SCHEAFFER <cscheaf...@comcast.net>
Subject: Stus-List Mast partner mast shims
Is Spartite the best way to shim a mast in the deck ring? Are there other ways
to shim a mast for a DIYer?
Chuck S
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