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  1. Replies
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    Re: have you seen one of these?

    There are only a few dozen threads to choose from. This is the most complete list I have run across:
    http://historicmotorcycle.org.au/images/Thread_Tables.pdf


    BRITISH THREADS

    US...
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    Re: Birdsmouth spar calculators

    Now that you mention it, it seems obvious. All of the angle pairs for any number of staves add up to 90°, so this works for any number of staves. Set the blade for one angle and rotate the stock 90°...
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    Re: Birdsmouth spar calculators

    Betcha I could do it. I'm pretty capable of mucking things up.

    There are several ways to muck this up with table saws and router bits:...
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    Re: have you seen one of these?

    bsp is a pipe thread. You said there was a machine screw marked bsp. It could have been the manufacturer's initials, not the thread type. More likely a 1/4-20.

    Try to dig out the screw as Nick...
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    Re: have you seen one of these?

    Are you sure that it is a 1/4 bsp internal thread? According to https://www.valvesonline.com.au/references/threads/ the major diameter of a 1/4 bsp thread is 13.157mm, which is kind of difficult...
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    Re: Expand Wooden Ferrule by 2 mm?

    When the strapping tape dries up or the rubber based PSA turns to goo salvaging the parts is of questionable value. On the plus side, it is well protected so it will take a long time to go bad.
    ...
  7. Re: resorcinol glue...now desperatly seeking supplier

    403 is 413. I had never heard of 413. When I looked it up, they said "WEST SYSTEMŽ 413 (previously called 403) is a mix of cotton microfibre and colloidal silica". Having previously recommended...
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    Re: Cordless Tools - Makita vs. DeWalt

    https://images.homedepot-static.com/productImages/0874f515-c04a-434d-a742-947541191111/svn/sun-yellow-rust-oleum-painter-s-touch-2x-general-purpose-spray-paint-249092-64_145.jpg:d
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    Re: Cordless Tools - Makita vs. DeWalt

    I have gotten a lot of use out of my old 18V Dewalt cordless drill and impact driver. This is my second Dewalt drill and first driver. The smaller batteries are short lived, and the old ones with the...
  10. Re: resorcinol glue...now desperatly seeking supplier

    That sounds like an autoclave cured B-stage epoxy. Those epoxies don't fully cure at room temperature and will stay in the fairly solid half-cured B-stage for months if stored in a refrigerator. The...
  11. Re: resorcinol glue...now desperatly seeking supplier

    If you follow Phil's advice, you will still get a decent joint, BUT...


    Filler helps maintain some thickness, in part because the thin resin won't run out of a gap before it sets up. It also...
  12. Re: resorcinol glue...now desperatly seeking supplier

    If you want a long working time, you might be better off with West 105 resin and 209 hardener than G-Flex. It is stronger, stiffer and has a longer pot life. Silver quandong is supposed to glue well,...
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    Re: Galvanic corrosion

    Crevice corrosion under anoxic conditions is still strongly influenced by salinity. But there is always microbially influenced corrosion.
    https://link.springer.com/article/10.1007/BF02835718...
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    Re: Galvanic corrosion

    Almost a non-issue. As Phil said, a fresh water boat that lives on a trailer won't have much to worry about. Ninigret is http://www.atkinboatplans.com/Oar/Ninigret.html

    You need some salt for...
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    Re: Wharram Catamarans , discussion required !

    The Polynesian Catamaran Association might be of interest here: http://pca.colegarner.com/
  16. Re: resorcinol glue...now desperatly seeking supplier

    So anyone over 40 has nothing to worry about?

    Someone here might know where to find your glue; http://fnqflyers.com/local-groups/
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    Re: Fixing unfair steam bent keel

    It looks like the growth rings loop around the knuckle as if there was a knot in the log next to the plank. Maybe it is just saw marks, but in your picture it does look like the grain is running...
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    Re: Galvanic corrosion

    Chris mcm has had a lot to say before:
    Electrolysis In Wooden Boats
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    Re: Galvanic corrosion

    I can't argue with you on any other aspect, but you don't need to form hydrogen gas to drive pH. As long as you generate some imbalance in the ionic concentration, water will dissociate to balance...
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    Re: Fixing unfair steam bent keel

    +1
    If you have much grain runout or any knots, the board won't bend well. The area near the knot bent more because it is weaker than the rest of the board. ...
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    Re: The House Of The Golden Balls

    I hate to be the one to mention it, but surely you primed the zinc before applying the gold. ...
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    Re: Torqedo owners - Heads Up!

    It has been done, the pod in the rudder, not the feathering prop. Phil at http://urbanboatbuilders.org/ knows the details.
    Large image:...
  23. Re: resorcinol glue...now desperatly seeking supplier

    You might find that an aircraft supply house will have resorcinol and would also understand date codes and the need for control over the age of their stock. There must be some homebuilt aircraft...
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    Re: Gick for lid of ballast tank?

    The beauty of a fillet on the inside of the tank is that you can't see it. It looks like you have plenty of surface area to bond. You don't need any glass cloth, just a nice ring of gick around the...
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    Re: Galvanic corrosion

    Too much zinc can make you sink. Bonding isn't always a good idea. Other than that, no argument.
    ...
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    Re: Classic Nav Light lenses needed

    Mea culpa, I meant to say 15- 20 sec. There is a very narrow window between soft and warm and hot runny mess. It can be done.
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    Re: 8" Low-speed Benchtop Grinder reccomendations

    Sounds like you have some experience with them. There has been a change in staff recently that seems likely to change the experience considerably.
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    Re: Galvanic corrosion

    Kasten Marine has a better reference on their site http://www.kastenmarine.com/_pdf/mbqMetRef.pdf

    There is a good book by Nigel Warren called metal corrosion in boats that is written for boat...
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    Re: 8" Low-speed Benchtop Grinder reccomendations

    A few minor observations on an old thread.

    Look closely at the pictures of Rikon, Wen, Powertech and some other low end low speed grinders. Every feature other than color, label and shield is...
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    Re: Gaps Between the Strips - Strip Planked Hull

    Grain orientation also makes a difference. This is not to contradict Bruce. Size matters, since 5% of 1 inch is obviously less than 5% of 3. https://www.wood-database.com/douglas-fir/ Shrinkage:...
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    Re: Classic Nav Light lenses needed

    Toast the bread first, add cheese, nuke for 20-30 sec. :D
  32. Re: resorcinol glue...now desperatly seeking supplier

    I posted a link that described UF, MUF, PRF. PF and RF. What we are calling resorcinol is resorcinol-formaldahyde, PF not PRF, which is phenol-resorcinol-formaldahyde. I have to admit to google...
  33. Re: resorcinol glue...now desperatly seeking supplier

    The UV does not penetrate very far into a glue joint, especially with any fillers present. Maintaining the varnish will protect the exposed edge of the glue.

    It is possible that resorcinol is...
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    Re: Classic Nav Light lenses needed

    Without the size or voltage, a precise answer is more difficult.
    Perko makes several sizes
    https://www.perko.com/catalog/category/spare_parts/product/605/...
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    Re: 400 watt engine compartment heater

    It sounds like an awful lot of work if all you need is a small space heater that comes on at a higher temperature. explosion-proof 400/800W Kinda ugly though.
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    Re: Keel bolt installations

    This is just an idea backed up by considerable ignorance. Anyone who jumps on it saying that I don't know what I'm typing about could be right.

    Stacking? So the usual way is to assemble the stack,...
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    Re: 400 watt engine compartment heater

    Any help?
    http://www.carquestprofessionals.com/catalogs/heating_cooling/htr_engine_heater_app_guide.pdf
    25579
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    Re: Mask/Face Shield

    http://billpentz.com/woodworking/cyclone/docs_orders.cfm

    Bill Pentz had a plan for a cyclone dust collector. He developed allergies and got a serious case of religion with respect to breathing...
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    Re: Sani Tred - absolute nightmare!

    It would be better if you could give some more detail as to what you used, how, on what, and what went wrong. Just saying that you had a poor experience doesn't help anyone understand what went...
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    Re: Removing glass from bronze ports

    Kroil sounds good. You might also try soaking in dilute hydrochloric acid, EDTA or Calgon to dissolve the corrosion. Muriatic acid runs around 40% in the hardware store, so dilute it 3 parts water to...
  41. Re: Why screw floorboards to frames / floors / cleats? Creates rot in both.

    The list of things that can go wrong will make your head spin. http://forum.woodenboat.com/showthread.php?241780-Electrolysis-In-Wooden-Boats
  42. Thread: Angled scarphs

    by MN Dave
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    Re: Angled scarphs

    Well Nick, if you want a faering that nests well, you can't do better than Stefan, but it may have angled scarfs.
  43. Thread: Angled scarphs

    by MN Dave
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    Re: Angled scarphs

    It is a Caledonia Yawl. Not exactly an unknown quantity. The OP knows what he is talking about, he just needs some details about scarphing angles.

    You spile one plank at a time. You scarph as you...
  44. Thread: Angled scarphs

    by MN Dave
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    Re: Angled scarphs

    I was trying to stick with one picture, not the thousand words. I figured that between your words and my picture, there was enough to work with.

    Yes it would have helped to have changed the...
  45. Thread: Angled scarphs

    by MN Dave
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    Re: Angled scarphs

    Like this?
    The red line runs between the points where the overlapped planks meet.
    The blue lines are parallel to the red line and mark the beginning and end of the scarph.
    The solid black line is...
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    Re: 400 watt engine compartment heater

    OK, if I have a point here, which is what Chris already said, it is that the OP's heater sounds good and the magnetic heater sounds like it is strictly for a relatively quick warm up, not something...
  47. Re: Inspired by BOI - my own take on designing a two sheet mini-faering

    Kenjamin said in a humorous way that the design was worth fleshing out. I agree. I thought that my 'complaint' would also be seen as a joke, hence the stupid red face. It is something of a standing...
  48. Re: Inspired by BOI - my own take on designing a two sheet mini-faering

    The plywood for the decks comes from the five sheet 21 foot version where you expand everything by 40%. The rest of the design is easy, you just start spiling the extra bits to make them fit. The...
  49. Re: How much epoxy is needed to bond sheets of 3/4" marine plywood together?

    You may be thinking of fine thread drywall screws, which are crap. Coarse thread drywall screws don't usually have the self drilling tip, but you don't need it here and they do clamp a lot better...
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    Re: Plywood Canoe Concept - Birchbark Style

    3mm okoume is fine. Stefan can't get it in Vienna, so he is stuck with 4mm poplar. After 20 years, my 3mm canoe is holding up well.

    The inspiration for these boats was the tortured plywood...
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