Needs Pictures: 0
Picture(s) thanks: 0
Results 31 to 45 of 203
Thread: The Northstar GIS Build
-
25th March 2013, 11:27 AM #31
The Northstar GIS Build
Bob's right, the dimensions are there. How you shape your lumber is what's missing. I had to laminate some pieces together to get a square sectioned blank. After cutting it to length, I traced the two triangles on either end and then planed the piece from one triangle to the other. The result is a bit of a twist and taper. In the end, it's very intuitive; not let the... economy of verbiage... worry you.
Sent from my iPhone using TapatalkDave
StorerBoat Builder, Sailor, Enthusiast
Dave's GIS Chronicles | Dave's Lugs'l Chronicles | Dave's StorerBoat Forum Thread
-
25th March 2013 11:27 AM # ADSGoogle Adsense Advertisement
- Join Date
- Always
- Location
- Advertising world
- Posts
- Many
-
25th March 2013, 12:27 PM #32Novice
- Join Date
- Mar 2013
- Location
- United States
- Posts
- 21
I had been curious/nervous about the stem since I first read some build reports. Once you mark the center line and dive in it really isn't so bad. I marked the centerline and then used my japanese razor saw to rough cut the angle, then went to work with my block plane. Seems like a table saw with a bevel would help speed the process, if you have one.
I have one side pretty much done, but I think I need to sharpen my plane again. It got to the point where it just didn't seem like it would bite into the wood any more.
Joe
-
25th March 2013, 07:02 PM #33
Now the difficult part of the build is over you can relax and enjoy the rest of it!
MIK
-
25th March 2013, 08:05 PM #34Senior Member
- Join Date
- Feb 2013
- Location
- New London, Minnesota
- Posts
- 181
Stem
Well, not quite. I'm still staring at figure 7.
-
26th March 2013, 12:51 AM #35Senior Member
- Join Date
- Feb 2013
- Location
- New London, Minnesota
- Posts
- 181
Foil Template
I was able to print the template to the correct size so I'm ready to glue things up, dependening on the arrival of the epoxy.
Thanks for the help.
-
26th March 2013, 05:31 AM #36Senior Member
- Join Date
- Feb 2013
- Location
- New London, Minnesota
- Posts
- 181
The Plywood is Here!!!
Can you believe it, I ordered on March 20 and it is my basement with two sheets on the work bench ready to mark. I first sorted to find the best grain patterns to use for the seat and tank tops as I intend to finish them clear. The six sheets had not a single void visible on the margins and was in beautiful shape.
The supplier: Marine Plywood by Homestead is in Vickery, Ohio near Sandusky and did a terrific job for me. I could find no one closer and the local lumber yards were clueless, trying to get me to take their Oregon marine plywood.
I'm going to sharpen the pencil and get started right now. Pics to follow.
Jerry
-
26th March 2013, 04:48 PM #37
It is always exciting to hear of plywood being delivered.
But I'm super excited because it sounds like really nice stuff!
Well done!
MIK
-
27th March 2013, 12:19 AM #38Senior Member
- Join Date
- Feb 2013
- Location
- New London, Minnesota
- Posts
- 181
The Race is On - Ninty day deadline until we hit the water
Well my friend Ken came over yesterday afternoon and we marked out the hull panels and the bottom. We had some difficulties deciding if we had things correct. There seems to be a bit of a reverse curve near the transom. In all it was only a mm or two so thought we would just cut it "fat" and let it take care of itself when we started putting things together. All in all, it felt like a big day.
The fiberglass also came, now if the epoxy would just show up. Actually I have more to do than I can get done so it really doesn't matter for a few days.
Shown below - faint markings and rows of nails. Not shown - wife on edge because of carpet.
002.JPG001.jpg
-
27th March 2013, 04:37 AM #39
You're correct. It never hurts to re-check your work, but what you found is what some of us have refered to to as MIK's secret sauce. The complex 3D shape he designed was intentional and translates to the interesting 2D curves you've discovered.
Here's something to consider (my own observation FWIW): the hull sides are the driving factor in the 3D shape. The hull bottom will lay flat across them (after planing the edges level) and you will trim the bottom to match whatever shape the sides define. So... the markings on the bottom panel are guidelines at best. They keep you from incorrectly using the two sheets and help reduce the assembly to the minimum size necessary. But... you can rest assured that no matter how you draw those lines on the bottom panel, the hull is going to take the shape it intends to based on the cut and planing of the sides' edges.Dave
StorerBoat Builder, Sailor, Enthusiast
Dave's GIS Chronicles | Dave's Lugs'l Chronicles | Dave's StorerBoat Forum Thread
-
27th March 2013, 11:35 AM #40
Dave explains so well! Thankyou Dave!
Yes .. the thing to look for in measuring is that one nail point seems out of line. If one is out of line compared to the ones either side then that is a mistake.
If the batten tells you the line is fair then the points you have marked are right. Like Dave says - if a group are consistent with the rest of the curve then that is where you want to trim down to.
Don't plane the lines off though except for very final fairing. When the hull goes together you will find those little concaves end up representing a totally fair line in 3D in terms of the curve of the chine vertically and horizontally. So if you don't have the correct 2D shape the 3D shape won't be quite as good as intended.
But excellent on the checking and rechecking.
Michael
-
28th March 2013, 11:32 PM #41Senior Member
- Join Date
- Feb 2013
- Location
- New London, Minnesota
- Posts
- 181
Fillers and thickeners
I have never used fillers before and am confused about how to mix them. Some products call for adding fillers to the epoxy before adding hardner and others say mix the epoxy and hardner then add the fillers. Is there a right way or does it really make any difference?
I'm going to fabricate the boom and yard very soon plus start on the mast so need to know how to do this right.
Thanks,
Jerry
-
29th March 2013, 08:20 PM #42
I mix the epoxy first (2 parts which are both in liquid form as far as i know) to ensure it will set and harden. I would say that epoxy is actually the product you have once you've mixed it's 2 parts together - the base compound and the hardener in whatever ratio that the manufacturer states. I use the largest syringes available (one for each part) when mixing for control and accuracy (even when it is a ratio by weight). Does this help resolve your confusion about the hardener?
When epoxy is mixed a bit, I will then add filler powder until I get the consistency I require - slightly runny for glueing strong joints (with a strong bonding filer), very runny for fairing (I.e. easy sanding for smooth finish before painting using light filler), or thick when doing fillets (using whatever junk filler I have and adding a few drops of staining to get colour to match the wood).
Mik's instructions in his plans are pretty good and after the first attempt I think you should get the picture. I suggest you slowly add the powder, mixing each small amount in, so that you see how much powder you need to add to get a consistency you want to work with.
Hope this helps.
-
30th March 2013, 05:35 AM #43Senior Member
- Join Date
- Feb 2013
- Location
- New London, Minnesota
- Posts
- 181
Fabricating
I finally got around to actually putting something together instead of sawing it apart. I fabricated the boom and yard following Theodor's instructions on mixing and filling and hope it turns out OK. I have some cold weather epoxy that I keep around and it needed to be used up anyway. I used wood powder and colloidal silica filler and made a thick paste. I also followed West Systems instructions on glueing things together. The results are a couple of gooy staves with plenty oozing out the crack. 003.jpg002.jpg
I'm lucky in that I have an old steel trailer that has a ten foot bed and is absolutely square and flat. After clamping the staves together, I added some persuaders to keep it from squirming around. It is about 4 C today so this cold weather stuff should be rock hard by tomorrow morning.
I found a really helpful thing at the lumber yard yesterday. It is a paint bucket with removable liners. I used a felt tipped marker to set my fill lines for my epoxy and hardner then mixed away. I coated the staves with a thin film of epoxy and let it set while I mixed the wood flour and silica into the pot. I used the plastic bag method to spread this thickened goo on the staves. I have a learning curve here but it is worth while and I will get better. This live run gave me some experience in estimating how much epoxy to mix at a time and using the bags. After that it was just clamp and add the weight to keep everything true.
001.jpg
Clean up was a snap with the baggie and the paint cup liner dumped in the dust bin.
Paulie, notice the useless work bench in the background with the piles of junk on top.
I'm not sure how much I am going to get done in the next few days as I am working 3d shift three of the next four days. What ever I do will not involve a lot of thinking.
Jerry
-
30th March 2013, 10:43 AM #44
The Northstar GIS Build
Good choice practicing your glue techniques on the spars. Better than "learning" with hull.
Keep up the good work!
Sent from my iPhone using TapatalkDave
StorerBoat Builder, Sailor, Enthusiast
Dave's GIS Chronicles | Dave's Lugs'l Chronicles | Dave's StorerBoat Forum Thread
-
31st March 2013, 03:53 PM #45
Main special variation from what you did this time is gluing end grain. It is covered in the appendices.
You'll get that now you have gluing more under your belt.
Michael
Similar Threads
-
help me build a basic flat build bed trailer for my kayaks
By gros21 in forum TRAILERS & OTHER FABRICATED STUFFReplies: 7Last Post: 13th October 2011, 08:47 AM -
CNC Build - CH1
By Lappy in forum CNC MachinesReplies: 37Last Post: 5th June 2011, 06:15 PM -
First Build
By CoronaC in forum FURNITURE, JOINERY, CABINETMAKING - formerly BIG STUFFReplies: 4Last Post: 11th May 2010, 05:02 AM -
First Build - it's done!
By petersemple in forum MUSICAL INSTRUMENTSReplies: 8Last Post: 1st August 2009, 03:25 PM -
Trailer - to build or not to build
By motegi in forum TRAILERS & OTHER FABRICATED STUFFReplies: 17Last Post: 6th May 2009, 03:07 PM