The Mad Hatter

Members
  • Content Count

    326
  • Joined

  • Last visited

Community Reputation

63 Kiss-ass

About The Mad Hatter

  • Rank
    Anarchist

Profile Information

  • Location
    East of the Great Divide
  • Interests
    Sailing
    Boat Building
    Bike riding

Recent Profile Visitors

2,784 profile views
  1. The Mad Hatter

    Tramp Fabric

    "What is a good modern material for making a new one?" Chicopee mesh
  2. The Mad Hatter

    What filler will hide thin gaps

    If you are going to vanish and don"t want to use sawdust to make up the filler and you don"t want white bits from using Q cells you may be able to us microballoons to give a darker brown or the west microlite to give a very pale brown or fawn colour. Having said all that nothing is ideal.
  3. The Mad Hatter

    New winner - boom height/LOA ratio

    Saws are not that expensive.
  4. The Mad Hatter

    Oops

    Anyone know the boat?
  5. The Mad Hatter

    looking for info/tutorials on diy fishnet trampoline

    The nets on my tri are dyneema SK75 netting for the main nets and fishing net for the fwd nets as they are just there to stop sails from falling in the water. On the main nets that take crew weight I just looped the netting over some 8mm rope and just weaved a couple rows of 3mm cord through the mesh to lock the netting. So the lashing is boat to 8mm. I found the details on a web site that sold netting for this purpose when I was building a few years back but cant seem to find it again. On the fwd nets I used the same method but with 4mm and 2mm in place of the 8 and 3. It has worked well for me but I did have to re tension a couple of times. It now seems stable. I don't think I will have to re tension again. However if I do it is pretty easy. Just pull the 3mm out , wrap the 8mm a couple squares further into the net and rethread the 3mm. Please see the nets in the pic if my explanation is unclear.
  6. The Mad Hatter

    They're Dreaming

    I have a scientific American magazine dated Feb 1957. On the front cover there is a pic of a car with 4 rocket engines in place of wheels and the caption, transport 10 years from now. I put this bit of CAD work in the same category.
  7. The Mad Hatter

    F-9RX wood core questions

    I would think that the higher the resin absorption the lower the chance of moisture absorption and the higher the compressive strength. If you do get around to testing Russell please post the results.
  8. The Mad Hatter

    Casting threads in composites

    I have had good success with molyslip. I have it for cutting threads in stainless with a tap but works great as a release if you coat the bolt and then wiping is off as much as possible. Once the resin is cured the bolt screws out easy leaving a good thread. Vasaline also works but get a better thread with the molyslip. I expect mould release would also work.
  9. The Mad Hatter

    Saving An Old Tiller

    Sorry but I don't really. All I know is that the stuff I used was normally used as lining fabric in garments like men's jackets and sold as a lining fabric. I have found nylon that was even lighter but didn't like it because it would tear into bits when removing it just making it a bit of a pain. The ever so slightly heavier fabric could by removed without tearing as a sheet. I should also point out that the good nylon that I used as peel ply was still much thinner than the normal peel ply I bought at the start of the last project and more stretchy so it would take complex shapes better than normal peel ply. All I can suggest is get some and do some testing
  10. The Mad Hatter

    F-9RX wood core questions

    Russell, well said. I agree 100% in every point that you have made as long as the home builder knows what he is doing. I have built many timber boats for myself. My latest build has a foam core and while It is a great boat and sturdy by foam standards a timber cored boat would be more durable. Nothing to do with build quality , just the difference in properties of the materials.
  11. The Mad Hatter

    F-9RX wood core questions

    I am familiar with both duracore and end grain balsa as a core. It is using wood instead of foam as a core so I call it a wood boat. The more friendly term is composite. If it is built right it would be a great boat. It will be heavier than a foam cored boat so if I thought the boat had been built well enough for me to consider buying I would want it weighed to quantify the difference. Built right at a reasonable weight it would be more durable than a foam cored boat.
  12. The Mad Hatter

    F-9RX wood core questions

    A boat built from wood is always harder to sell. It is the unknown capabilities and attention to detail of the builder. As far as I'm concerned saying it was "built under professional supervision " does not cut it with me. As in all professions there are good and not so good and when building from wood you need the best. Also with the dominance of fibreglass in the industry a lot of professional builders may have never even worked on a wood boat let alone built one. Nothing wrong with wood boats if built right but it is too easy to cut corners and someone pays the price later on. Are you OK with the risk?
  13. The Mad Hatter

    Best way to finish dyneema lacing of trampoline.

    My solution is similar to Scarecrow, I spliced and eye in one end and half hitches with a couple of stitches with whipping twine the other end. If I need to adjust I will cut the stitches and undo the half hitches , tighten and redo.
  14. The Mad Hatter

    Companionway Washboard

    I replaced my ply washboards with ones I made from corecell foam, carbon and glass. The edge was solid glass for around 1/2 an inch so it wouldn't get damaged when not in position. This just edged 6mm M80 foam and all sheaved in carbon to make sure it was stiff enough for the task. There are two and below is a pic of the top one.