Stooping the slopping when you are motoring

633It is not often a brainwave occurs, but I had one the other day. My tender - the much beloved and bashed about Microwave - is fitted for sailing, with plate case and rig, though much more often used for motoring or rowing. So how do you stop the slops of water which come up the plate case? After a couple of years fiddling about with plates which were held - or not - by shockcord, and which never really seemed to do the trick, It suddenly occurred to me that a bit of hosepipe shoved into the top of the case would both stay put and seal it. Eureka!

And a scheme for working out the clearance hole

630Measure the head in sixteenths of an inch, subtract 1 from that answer and then multiply by 2. So far so good, but a reader extended this by showing how to calculate the clearance hole for woodscrews as the gauge plus 3 in sixty-fourths. ( For example 10 gauge: 13/64").

Good Question

629You put lead into putty if you want to use it as a caulking compound. And then one customer had the nerve to ask why. We suddenly realised that none of us actually knew. And it took a surprising number of phone calls to find out, since most of the answers we got were of the Well, that's how it is done vthat'sy. So just in case you want to impress the people in the boatyard, here is the answer, courtesy of Bob Forsyth.

..if you can't get lead compounds

626A New Zealand customer offers an alternative to lead-based stopping/caulking compounds for those of you no longer able to get hold of or use traditional materials. He says "Older caulked seams will never allow any poly ...type sealant to adhere properly 'cause the edging is saturated with (linseed) oil in which the red lead or white lead was suspended. So use ordinary glazing putty in linseed oil base, mix judiciously with oil based antifouling primer, fill caulking gun and fill seams. Then paint over with antifouling.