Showing posts with label note. Show all posts
Showing posts with label note. Show all posts

Saturday, June 11, 2016

More gaps between BHs and bottom

Today I planed down the chinelogs to flat, in order to fit the bottom at some point in the near future. Unfortunately for me, something somewhere didnt add up.

When I cut the notches in my BHs, I was very careful to use an actual slice from my chinelog to trace a pattern for the notch. Somehow, my notches were too deep laterally, I have gaps there that need filling. Today I now realize that they are also too shallow vertically... after planing the chinelogs flat, I have a gap between the bottom of the BHs and the chinelog. Take note from BH3:


When I fit the bottom onto the boat, the gap is clear (boat is upside down):


This is especially frustrating because:

1: I measured the notches using an actual piece from the chinelog
2: I was very careful to do my best eye-balling job that the bottom of the ply appeared to meet the bottom of the BHs

In retrospect I should have:

1: After the dry-fit turn the hull upside down to get a good look at what was going on
2: Do a test plane portion to see where a flat chinelog ends up in relation to the BHs

So now I can do one of three things:

1: Fill the gap with loads and loads of epoxy when I put on the bottom
- Risky because I could deform the bottom if I screw too hard placing it into position
2: Fill the gap with a strip of wood that is painstakingly cut and glued into place
-Annoying work, AND it wont match the BH bottom frame
3: Continue to plane down the chinelogs until they match the BHs.
-I lose freeboard AND it could make the boat too wide at the bottom and the pre-cut ply for the bottom wont be able to accomodate the new width.

For all its worth, heres the boat with the bottom kinda on:


Ive just decided that solution #3 is not a good one.

I have now just decided to go with option #2.

Interestingly enough, BH1 came out perfect!... WTF, Over?

Thursday, May 12, 2016

A note on tools

A few things on tools that I have found out the past few days.

A japanese pull saw is awesome. I doubted it at first, hemming and hawing for months before getting a small one-sides saw. A FANTASTIC PURCHASE. Versatile, sharp, easy to use, and precise. Practice first, because youll saw through something important quickly and without realizing it (trust me).

My random orbital sander was a $9.95 DEATH DISASTER I purchased at cheap-tool-emporium Harbor Freight. Its so frustrating to use I want to throw it at the cement wall. I will have to go buy a better one that actually secures the sandpaper.

Most importantly, I was perusing my jigsaw blades and saw something called a "scrolling blade." It was small and skinny. "Hmmmm, I betcha this is for going around corners a little tighter than the normal blades!" Hmmmm, I reckon I was correct... and this was after I cut the hole through the transom, BH2 and BH3. Boo me, for not knowing my tools. Again, amateur style is my building style.

Monday, April 4, 2016

Mast glued up rudder and daggerboard glassing

Ok, another frustrating boatbuilding day here in New Hampshire.

The mast got glued up today in a long session.  It takes a deceptively large amount of glue.

First, I laid down the mast ladder frame, with the two sides to be glued next to it.  I primed the wood to be glue with unthickened epoxy, and then made up the thick stuff.  Application of the glue went along the base plug, narrow staves, and ladder framework.  Afterwards, I picked up the ladder section and placed it upside down on the wide stave.  The other side of the ladder was then glued up and the wide stave dropped onto that, making a sandwich.  Mr. Storer recommends a clamp every foot.  I only have 9 clamps that can be used on the mast.  Mr. Storer advises his customers to use packing tape... use a clamp, wrap the mast with packing tape to hold the pressure, move on.  This method has been used by other Goat Island Skiff builders, successfully.  It kind of worked for me, but not to the degree I would have liked, the clamps hold more pressure.  Regardless, better than nothing, and with some careful maneuvering I was able to make sure that all gaps were closed up.


It took longer than I thought, and a lot more glue than I thought.  There were a few areas where I really had to force the staves into position, and this was a pain.  For some reason I dont have any real overlap in the lower half part of the mast or I could have used nails to hold it in place.  I used my muscles instead, and clamped them down, and hoped for the best.  In  a few locations theres an overlap on one side and an underlap on another... not much, about 1mm, but I see it, and it pisses me off.  I should be building to tighter tolerances by now.  I dont know if its impatience to get this done with, or its a level of meticulousness that drives me batty.

Off to check the bottom runners, shall we?

Oh look, gaps!


 In my quest to use less glue (I keep throwing out tons of squeezed out glue) I went with what I thought was a moderate amount of glue... but it obviously wasnt enough.  These are, surprisingly, my worst scarfs on this boat yet.  This is not the end of the world, I can force some glue in there, they are not necessarily under pressure (that would compromise the scarf) and they will fully glued onto the hull.  So this is not the end of the world.

This is:


My daggerboard.  What a mess.  I was so concentrated and focused on making sure I got it smooth around the end of the board, I didnt really care what happened along the edges of the glass.  I figured I could sand it smooth later.  Now, Im realizing I really screwed myself up the wazoo.  This clean up job without going through the soft wood of the board is going to murder my day tomorrow.  UGH.



Tuesday, March 29, 2016

Bottom surprise! and limber holes and gaps filled

Today I overturned my bottom after gluing it last night. I was all very nice and neat and did my best and I was welcomed to see the fair bottom of my speed-demon boat with THIS:


HELLO DRAG. A giant glue mess that I will have to sand smooth. Which, if I estimate correctly, will take forever and a half. I shoulda woulda coulda put packaging tape around the seam, but my side panel job came out so neat (probably because I didnt put glue between the panels) that I didnt think I would see this. Also, note the glaring holes from my finishing nails that I used to pin the buttstraps in place. SOB, I went right through the ply. This is very embarrasing, I havent gone through the ply anywhere where I didnt want to, this is the first time, and I have no idea how I did it. Again, I didnt do it on the side panels, so why now?

In other news, I planed down the new shims that will fill the gap between the bottom and the BHs, and cut/chiselled some limber holes. They look nice and neat from this angle because the ply is on the other side, which is all chipped up. I shoulda woulda coulda dammit scored the ply to get nice smooth cuts first, before going after it with my chisel.


Notice the stringy thing coming out of the limber hole... thats some fabric coming out from IN BETWEEN the layers of the ply! OOOooooooooh, mystery!

You may also notice the cloudy color, that because Ive sanded the layer of epoxy there in preparation for bottom being glued on. Ive decided to put in mini fillets along the BHs and the bottom for practice and to re-enforce the double seam, one between the bottom and the spacer, and the on between the spacer and the bottom of the BH frame.
 

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