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Tack Depth

Discussion in 'Wood and Canvas' started by K90, Jul 9, 2019.

  1. K90

    K90 Curious about Wooden Canoes

    I am in the process of building my first boat. I have recently completed clinching the hull and was in the process of faring in preparation for canvas. My question is about tack depth because it seems that I have driven some/most of the tacks too deep. After I soaked the hull, the hammer blossoms all came out but about 60% of the tacks now have a depression around the tack head between 0.5 and .0.75" in diameter and roughly 1/16" deep. It is too late to do anything about that now, but my question is about filling these gaps - should I fill them all in and then fair and sand the hull, or will that size hole be spanned by the canvas and not require any further action? If the answer is fill them in, any suggestions as to what type of wood filler to use?
     
  2. Andy Hutyera

    Andy Hutyera The Red Canoe Guy

    It's far better that the tack heads be below the surface than proud. There should be no need to fill those depressions as they will not show once the canvas is on. On the other hand proud tack heads will show through and cause problems when you are applying finish.
     
  3. OP
    OP
    K90

    K90 Curious about Wooden Canoes

    Great, thank you for your reply Andy. There is no concern that over time the canvas will stretch into that depression under full load and make the canvas loose in those areas?
     
  4. OP
    OP
    K90

    K90 Curious about Wooden Canoes

    I thought I would add a picture, this is one of the worst areas where I have actually damaged the planking, but still the depressions range from 0.5 - 0.75" in diameter and 1/16" deep. No need to fill in these type depressions? It certainly will save a bunch of time if I can skip it.
    IMG_1257.jpg
     
  5. MGC

    MGC Paddlephile

    Holy mackerel....that's some serious hammering. It's rare to actually break the wood fibers around a tack like that. You might want to take a look at that hammer and see if you can soften the edges.
    I would not fill those....they will vanish under the canvas. If you are really worried about it take your steam iron and a damp towel and stem the wood back up to the fill the dimples. Personally I loath digging filler (or resin) out of tack holes in order to work on a boat so except for really bad imperfections I try to avoid adding glop when I fare.
     
  6. OP
    OP
    K90

    K90 Curious about Wooden Canoes

    Yea, I might have gotten a little carried away with the hammer. I used plenty of water in the planking process to get the boards to cooperate so they were pretty soft. I am in CO, and if i don't use lots of water the planking tends to split along the bilge due to the low humidity (I'm assuming).

    I'll try the steam and no filler. I really appreciate both of your responses, thank you very much!
     
  7. Dan Miller

    Dan Miller cranky canoeist Staff Member

    Get yourself a cobbler's hammer. They are cheap at flea markets or on eBay. They have a nice, wide head that is domed. Perfect for setting canoe tacks without leaving much of a hammer blossom.
     
  8. OP
    OP
    K90

    K90 Curious about Wooden Canoes

    I will get a cobbler’s hammer before my next build, without a doubt. Thank you.

    The ironing worked well to lift up the wood fibers. Thank you all for your help.
     
  9. Just1moredave

    Just1moredave Curious about Wooden Canoes

    I'd give you my cobbler's hammer but I like it too much. My hammering usually looks like your photo but the cobbler's hammer makes me look good. I'm in Aurora so my planking was under similar conditions.

    [​IMG]IMGC2030 by Dave, on Flickr
     
  10. OP
    OP
    K90

    K90 Curious about Wooden Canoes

    Thanks Dave! I’m in south Denver.

    It seems that I should have come to this forum a long time ago. Certainly a wealth of knowledge.
     
  11. monkitoucher

    monkitoucher Canoe Curious

    Hey K90, I'm in Denver too. Let me know if you need any help or would like to go for a paddle after your done.
     
  12. OP
    OP
    K90

    K90 Curious about Wooden Canoes

    Awesome, another Denver paddler, I'll be in touch, for sure! Some procedural advice now that I am about to start the finishing process would certainly be welcome.
     

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