Re: [bolger] MDO, Meranti, Okume
On Tue, 8 Jan 2002, Chuck Leinweber wrote:
otherwise an attractive cabin skiff for low power scooting around.
Kayleigh has a schooner nose, and the design calls for attractive but
fussy and expensive mahogany strips for decking material. But the idea is
a great one--I just like a longer and leaner look. I want a purposeful
but stealthly look going down the rivers 'round here, with lake travel as
the usual mode.
But, with a 2-year old with the flu, the closest I come to progress is
dreaming. (And writing this message!)
-Chris
> Is it a little like Tracy O'Brien's "Kayleigh"?Yes, a little. The Kayleigh is a beamy boat with top-hamper, but is
>http://www.localaccess.com/tracy/Kayliegh.htm
otherwise an attractive cabin skiff for low power scooting around.
Kayleigh has a schooner nose, and the design calls for attractive but
fussy and expensive mahogany strips for decking material. But the idea is
a great one--I just like a longer and leaner look. I want a purposeful
but stealthly look going down the rivers 'round here, with lake travel as
the usual mode.
But, with a 2-year old with the flu, the closest I come to progress is
dreaming. (And writing this message!)
-Chris
Chris:
Is it a little like Tracy O'Brien's "Kayleigh"?
http://www.localaccess.com/tracy/Kayliegh.htm
Chuck
It's a self-designed wonder, which is basically a multiplied Bolger Teal,
stretched out to 22 feet X 6 ft, and with the transom shaved off a bit,
and a 5hp outboard in a well, with a cuddy cabin forward. Designed by
model, and appeal to Bolger.
Still too little along to talk about much, I'm afraid.
[Non-text portions of this message have been removed]
Is it a little like Tracy O'Brien's "Kayleigh"?
http://www.localaccess.com/tracy/Kayliegh.htm
Chuck
It's a self-designed wonder, which is basically a multiplied Bolger Teal,
stretched out to 22 feet X 6 ft, and with the transom shaved off a bit,
and a 5hp outboard in a well, with a cuddy cabin forward. Designed by
model, and appeal to Bolger.
Still too little along to talk about much, I'm afraid.
[Non-text portions of this message have been removed]
On Mon, 7 Jan 2002, Chuck Leinweber wrote:
stretched out to 22 feet X 6 ft, and with the transom shaved off a bit,
and a 5hp outboard in a well, with a cuddy cabin forward. Designed by
model, and appeal to Bolger.
Still too little along to talk about much, I'm afraid.
> Chris: Refresh my memory: What is your current project? ChuckIt's a self-designed wonder, which is basically a multiplied Bolger Teal,
stretched out to 22 feet X 6 ft, and with the transom shaved off a bit,
and a 5hp outboard in a well, with a cuddy cabin forward. Designed by
model, and appeal to Bolger.
Still too little along to talk about much, I'm afraid.
Chris:
Refresh my memory: What is your current project?
Chuck
I'm building my current boat out of MDO. The quality of MDO can vary--the
first batch I got was 3/8", with a smooth and beautiful side, and the back
side was some of the worst junk I've ever seen in plywood in my life.
OSB looks better.
I bought some 1/2" MDO instead. Heavier, but it's OK, it's a displacement
boat, and the 3/8" was probably slightly light anyway. It's very nice
stuff. There are, however, small knots in the inner plys. When I cut a
sheet, they sometime pop-up. I'll fill 'em with epoxy+filler, and be
satisfied. (I'm not going offshore).
Bolger rules!!!
- no cursing, flaming, trolling, spamming, or flogging dead horses
- pls take "personals" off-list, stay on topic, and punctuate
- add your comments at the TOP and SIGN your posts, snip all you like
- To order plans: Mr. Philip C. Bolger, P.O. Box 1209, Gloucester, MA, 01930, Fax: (978) 282-1349
- Unsubscribe:bolger-unsubscribe@yahoogroups.com
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Non-text portions of this message have been removed]
Refresh my memory: What is your current project?
Chuck
I'm building my current boat out of MDO. The quality of MDO can vary--the
first batch I got was 3/8", with a smooth and beautiful side, and the back
side was some of the worst junk I've ever seen in plywood in my life.
OSB looks better.
I bought some 1/2" MDO instead. Heavier, but it's OK, it's a displacement
boat, and the 3/8" was probably slightly light anyway. It's very nice
stuff. There are, however, small knots in the inner plys. When I cut a
sheet, they sometime pop-up. I'll fill 'em with epoxy+filler, and be
satisfied. (I'm not going offshore).
Bolger rules!!!
- no cursing, flaming, trolling, spamming, or flogging dead horses
- pls take "personals" off-list, stay on topic, and punctuate
- add your comments at the TOP and SIGN your posts, snip all you like
- To order plans: Mr. Philip C. Bolger, P.O. Box 1209, Gloucester, MA, 01930, Fax: (978) 282-1349
- Unsubscribe:bolger-unsubscribe@yahoogroups.com
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Non-text portions of this message have been removed]
I'm building my current boat out of MDO. The quality of MDO can vary--the
first batch I got was 3/8", with a smooth and beautiful side, and the back
side was some of the worst junk I've ever seen in plywood in my life.
OSB looks better.
I bought some 1/2" MDO instead. Heavier, but it's OK, it's a displacement
boat, and the 3/8" was probably slightly light anyway. It's very nice
stuff. There are, however, small knots in the inner plys. When I cut a
sheet, they sometime pop-up. I'll fill 'em with epoxy+filler, and be
satisfied. (I'm not going offshore).
first batch I got was 3/8", with a smooth and beautiful side, and the back
side was some of the worst junk I've ever seen in plywood in my life.
OSB looks better.
I bought some 1/2" MDO instead. Heavier, but it's OK, it's a displacement
boat, and the 3/8" was probably slightly light anyway. It's very nice
stuff. There are, however, small knots in the inner plys. When I cut a
sheet, they sometime pop-up. I'll fill 'em with epoxy+filler, and be
satisfied. (I'm not going offshore).
From reading off Noah's site and talking to the MDO supplier here in CO, here's what I have found out.
(From Noah's web site)
*******************************
BS1088 is marine grade, BS 6566 is exterior grade. There are no knotholes or patches in either; both have void free cores and waterproof glue. Main difference is the quality of the faces. The BS6566 will have a few more appearance flaws, and in some sizes the faces may be thinner. Lloyd's register certifies that the manufacturer has met the specifications for the standard.
Okoume is an African mahogany, light in weight and color, and clear finishes quite nicely. Meranti is a Mahogany species that grows in Indonesia and the Philippians. It is about 20% heavier and is usually but not always darker than Okoume. We generally recommend Okoume for Kayaks and boats where weight, good bending characteristics and a varnish finish are desirable. Meranti would be more for boats that are painted, and harder denser plywood is required.
***********************************
From the MDO supplier help line I got the following.
MDO is not designed for water submersion. It's designed as a exterior sign base and assumes that it will be protected from water intrusion through paint or other means. Many sign makers will use epoxy to seal the edges while others use penetrating paints and preservatives. As far a construction, the outer faces are made of a hardwood of several types such as oak, mahogany, ash, etc. This gives it a evenly expanding face to help reduce or eliminate checking. Each face is impregnated in a "highly water resistant" resin (not water proof) and surfaced with a paper product to enhance the paint retention and further reduce checking. Inner layers maybe one or combinations of Group 1 veneers such as fir or pine. (Long list of others). Smooth and no voids on the exterior veneers with no or very minimal voids on the interior plys. Not marine grade but close to the BS 6566 standard.
**************************************************
Epoxy coated and glassed, it should work very well. At least in my opinion but like Meranti it's a bit heavier than straight marine plwood of Fir.
Jeff
[Non-text portions of this message have been removed]
(From Noah's web site)
*******************************
BS1088 is marine grade, BS 6566 is exterior grade. There are no knotholes or patches in either; both have void free cores and waterproof glue. Main difference is the quality of the faces. The BS6566 will have a few more appearance flaws, and in some sizes the faces may be thinner. Lloyd's register certifies that the manufacturer has met the specifications for the standard.
Okoume is an African mahogany, light in weight and color, and clear finishes quite nicely. Meranti is a Mahogany species that grows in Indonesia and the Philippians. It is about 20% heavier and is usually but not always darker than Okoume. We generally recommend Okoume for Kayaks and boats where weight, good bending characteristics and a varnish finish are desirable. Meranti would be more for boats that are painted, and harder denser plywood is required.
***********************************
From the MDO supplier help line I got the following.
MDO is not designed for water submersion. It's designed as a exterior sign base and assumes that it will be protected from water intrusion through paint or other means. Many sign makers will use epoxy to seal the edges while others use penetrating paints and preservatives. As far a construction, the outer faces are made of a hardwood of several types such as oak, mahogany, ash, etc. This gives it a evenly expanding face to help reduce or eliminate checking. Each face is impregnated in a "highly water resistant" resin (not water proof) and surfaced with a paper product to enhance the paint retention and further reduce checking. Inner layers maybe one or combinations of Group 1 veneers such as fir or pine. (Long list of others). Smooth and no voids on the exterior veneers with no or very minimal voids on the interior plys. Not marine grade but close to the BS 6566 standard.
**************************************************
Epoxy coated and glassed, it should work very well. At least in my opinion but like Meranti it's a bit heavier than straight marine plwood of Fir.
Jeff
[Non-text portions of this message have been removed]