Saturday, April 18, 2020

Sabre 28: Bottom work

We opened the blisters with a hammer and chisel.  I like this better than a disc sander.  It is way cleaner and you can be both quick and precise.  it has the benefit of preserving the original curvature you can fair to.  After the hull dried for 20 days, I filled the voids with West System epoxy with adhesive filler and barrier coat additive.
After this set, It was sanded and got an additional fairing coat.  After this was sanded I rolled on 2 passes of barrier coat additive in epoxy.
Today we will lightly sand this in preparation for our ablative bottom paint.  We will be using Pettit Ultima SR 60.



Monday, April 13, 2020

Sabre 28: Keel bolts

Having the boat hauled gave me the opportunity to back out the nuts on the 7 keel bolts with no anxiety.
Glad I did.  They were in ok condition.  No leaks but the nuts do show signs of crevice corrosion.   The bilge is a location where fresh water can lose it's entrained oxygen and start the corrosion of stainless steel.  It was also apparent that the washers used where deformed and therefore not dispersing the loading correctly.
To address this I ordered new 316 heavy nuts and 316 over-thickness washers.
The nuts came from :
https://www.albanycountyfasteners.com
The washers were from:
https://www.extsw.com

Both companies provided quality items I would recommend.
After a thorough cleaning of the bolts and bilge surface, the new fasteners were seated and torqued into position with a bit of 5200 providing an additional seal.


Before and after.  (Different bolts)