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General Discussion Tolman Skiffs / Re: How much waterproofing is enough?
« Last post by Cannon on February 26, 2017, 05:51:41 PM »
For glassing over rounded edges, I found it helped a lot to cut the tape at a 45° angle.  This way none of the the glass strands are running 90° across the edge.  I got a lot less air bubbles this way.
Good plan, wish I would have done that! Would have made it more user friendly.


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General Discussion Tolman Skiffs / Re: C & R Jumbo
« Last post by Cannon on February 26, 2017, 05:48:22 PM »
 Looking good, I built my roof similarly, very strong. As far as running a chase under the shelves, if you are not going to use flush rod holders, it would work fine. It will cut down on access under the shelves for mounting downriggers, crab Davits, flush rod holders and such. I ran a three inch conduit inside the cabin, ending at the rear bulkhead for that reason.
I ran my hydraulic lines inside a three inch conduit under the deck. They come up right under my auto pilot pump in the stern, and come up going straight into the bottom of the helm pump. I was happy with the way it came out, and it is very functional so I would do it again should I ever build my next dream boat...


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General Discussion Tolman Skiffs / Re: How much waterproofing is enough?
« Last post by Shallow Minded on February 26, 2017, 05:02:01 PM »
For glassing over rounded edges, I found it helped a lot to cut the tape at a 45° angle.  This way none of the the glass strands are running 90° across the edge.  I got a lot less air bubbles this way.
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General Discussion Tolman Skiffs / Re: C & R Jumbo
« Last post by Cordell on February 26, 2017, 04:57:38 PM »
The Roof is on and glssed! Used 1/4" on the bottom and top  with a 3/4" foam core. We put kickers under the beams to put about a 3/8" crown in them, and by the time everything was glued up the crown mostly stayed. The 1/4" made it easy though a bit heavier than skins it bent over the beams and held its shape nicely. We were able to run some wiring in the core. Should save some wire clamps later. Came out better than we imagined and super strong.

Now onto the inside! Back to some planning and layout fun. We are thinking about running a pipe under the shelf for hydraulic steering, controll cables, and wires as we have seen in many builds.

What minimum  size pipe will accommodate that?

 Our fuel fill is going straight up through the gunwale midship and we are not yet sure what will fit behind it.

Cordell
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General Discussion Tolman Skiffs / Re: Pigmented epoxy vs. paint
« Last post by starbright55 on February 26, 2017, 03:59:48 PM »
And mixing different colors (as layers) allows you to see things better when fairing.

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General Discussion Tolman Skiffs / Re: How much waterproofing is enough?
« Last post by gdwamsley on February 26, 2017, 03:34:33 PM »
I cut the tape off the air bubbles after curing and filled with peanut butter the sanded smooth.  Very little work and should be good waterproofing.

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General Discussion Tolman Skiffs / Re: How much waterproofing is enough?
« Last post by Cannon on February 26, 2017, 12:24:58 PM »
If you don't tape, edges can start to delaminate and exposed wood, especially fir will check. On edges too small to easily tape, I used a silica thickened mix. So far, so good...


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28
General Discussion Tolman Skiffs / How much waterproofing is enough?
« Last post by narvik on February 26, 2017, 11:35:48 AM »
Hei,
Have mostly finished the hull, very close to Renns book. Now I work on all the details under deck. Compartments for the tanks, different brackets for pumps and other equipment, also preparing for hatches and then some more.
It is easy to glass both sides of the plywood, but how about all the edges? Tried to use my router to get nice corners, then glass with light tape. Looking good when applied, but some parts always get loose under the curing process. Air bubbles and edges standing up.
The same with solid wood, taping all surfaces gets frustrating.
So any comments?
Do I need to do these details at all? Might epoxy alone do the job?
Will use primer when all the epoxy work is finished.
So, how much is enough for non structural parts under the deck?
Thanks
Peter
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General Discussion Tolman Skiffs / Re: Home
« Last post by narvik on February 26, 2017, 11:20:58 AM »
Hei,
Nice design. Is there a copyright issue or is it possible to post the plan?
Thanks
Peter
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Boat Building Materials / Re: QuickFair Question
« Last post by larspa on February 26, 2017, 11:06:34 AM »
Yeah, I used QuickFair and would definitely do so again.  Mixing is sooooo much easier. 

But to my issue...   I've had the same problem with both epoxy over straight epoxy and over stuff thickened with graphite.  SOP for all applications is to vacuum and wipe with a micro-fiber cloth (picks up dust much better).  I've tried wiping with alcohol and with acetone -- no joy.  One section I also washed with the straight water. When it still happened following the procedures noted above, i'm still trying to think what would cause it.  I wondered about a bit of grease from my hand, but given the alcohol and acetone experiments that seems pretty unlikely.  Tipping after rolling it seems to get rid of some of it, but definitely not all.  I've finally decided it's dust of some sort.  Running my hand over the hull, I found few of some sort of larger sized black dust particles following a wipe down.  I guess I'll just get crazy fanatical about wiping and alcohol and more wiping.  One other thing: I turned off the ceiling mount heater and the ceiling mounted air filter before the wipe down.  Presumably, with the room air still, dust won't be flying around. 

What I can't figure out is that it appears that none of the rest of the builders are having this kind of problem....at least one that is not pretty clearly related to dust or technique.  But it's becoming something of an obsession for me...probably a control issue.   :o
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