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Dumas 36" Chris-Craft Runabout Build

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Old 12-02-2011, 07:07 AM
  #76
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Default RE: Dumas 36

Fred,

Hope you are about over your cold; I know they can sometime really hang on. 

Xsthomas's Runabout is really a nice looking boat.  He's personalized it nicely.  I'm just going to have to keep my eyes open for a good buy on eBay or one of the groups.

Bob
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Old 12-03-2011, 12:32 PM
  #77
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Default RE: Dumas 36

Hi Bob,
Thanks for the concern. I thought I had pnuemonia but everything checked out OK. I just stained everything ready to glass. I'll post pics.
When the stain is totally dry I will scrape the caulking strips to make them whiter. Hope to get the glass on tomorrow.
Xsthomas,
You did a great job on yours hope to personalize mine soon.
Thanks,
Fred
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Old 12-03-2011, 02:28 PM
  #78
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Default RE: Dumas 36

This was my first boat build back in '95. It will take you a while to get where you are satisfied, even then,its a never ending project. Over several yearsI went through several motor choices, along with trying different gearing, props and cells count, and others accessories.I have built many others andhave sold them all but this one, which I enjoy running the most.
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Old 12-06-2011, 12:39 PM
  #79
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Default RE: Dumas 36

OK guys, I'm onto the glassing stage. I use a product called Envirotex Lite. Mix equal parts resin and hardener then thin 100% with denatured alcohol. This leaves you with a water consistantcy mixture. Lay your cloth down,I use 3/4 oz., blow out or dry brush out any wrinkles, then start applying the resin. I start at the center and work my way down and out. I covered the entire bottom and sides of the hull as well as the transom with one piece. You do have to make a slice at the bow and both sides of the transom and fold the cloth over. Any ridge will disappear when it's sanded and subsequent coats are applied. This will be repeated on the top and the hatches.
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Old 12-06-2011, 02:32 PM
  #80
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Default RE: Dumas 36

Fred,

O.K., here come the questions. [X(]

Don't know why I didn't ask this one sooner, but what color do you prefer to use for the stain?  Your razor must be really narrow to scrape those 20 or 30 thousandths white stripes.

It makes sense (to me) that you fold from the sides to the transom, right?  And just from the picture I couldn't tell for sure, but you also cut a slit for the stuffing tube to slip through, correct.  (I know, the questions are somewhat sophomoric.)

Next, with the 'epoxy' thinned 100 percent, what is your working time to get all of the fiberglass wet down?  Then, what's the cure time?  Could you put a second coat (fill coat) of 'epoxy' on soon after the first coat is set, and before it hardens, doing the same with a third and even a fourth (fill) coat, after each succeeding coat has set? This would avoid having to sand off the "waxy" coating that you get from 'most' epoxy's.  I would think that would reduce the sanding time considerably and you would still have time to either cut the overhang off with a sharp utility knife and/or sand it off with fine sandpaper.

Bob
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Old 12-06-2011, 03:25 PM
  #81
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Default RE: Dumas 36

Hi Bob.
Great questions.
I used the stain that was supplied in the kit. It's a powder that you mix with water. It looked orange when I first stained it but when you put the resin on it looks mahogany which will probably look richer when more coats of resin are applied.

Working time for this product can run into hours. You have plenty of time to put down all your cloth. Cure time is around 24 hours. I usually just scuff the first coat with 220 dry and then apply a second coat that is thinned around 70 %. This usually fills in the weave and starts to give you a good base for paint. When the second coat is cured I sand the whole hull with 80 dry this cuts quickly and makes short work of smoothing the resin. I then wet sand with 220. This product doesn't really leave a waxy buildup after it cures.

I was able to clean the caulking strips with a common straight edge razor pulling the razor towards me in one pass. I was surprised that I could get most of the stain off with one pass. It only took me about 20 mins to do all the strips. I will be doing the deck and hatches tomorrow so you will be able to see the results.
Hope this helps,
Fred

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Old 12-06-2011, 03:52 PM
  #82
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Default RE: Dumas 36

Fred,

Yep,  that answers my questions.  That Envirotex Lite sounds like a pretty good product.  Although I have plenty of epoxy right now, including some 5 to 1 stuff, the long work time is inviting, especially to me, a oft times slow worker.

I just missed buying a Dumas runabout kit #1230.  If I could have been available maybe I might have won it.  Maybe next time.  Probably oought to wait until after my birthday, so that will put it off until February 2012.  I can wait.

Bob
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Old 12-07-2011, 05:11 AM
  #83
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Default RE: Dumas 36

OK, excess glass was sanded off and glass cloth placed on the top of hull. Again working from the middle and down the side of the hatch deck, you are able to lay the cloth into all the joints in one piece. Hatch pieces covered also.
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Old 12-08-2011, 11:44 AM
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Default RE: Dumas 36

Second fill coat applied. After this cures completely I will sand with 80 grit and finish with 220 wet. This should be a very nice smooth base for subsequent coats. The bottom of the hull should be ready for paint.
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Old 12-08-2011, 02:32 PM
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Default RE: Dumas 36

Hi Fred,

Your boat is looking great! Nice glass job!

-Rich.
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Old 12-08-2011, 02:46 PM
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Default RE: Dumas 36

Hi Rich,
Thanks for the comment. It's getting there.
Thanks,
Fred
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Old 12-08-2011, 03:31 PM
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Default RE: Dumas 36

Nice progress there Check6. After glassing mine and sanding, and another coat or 2 to fill holes and smooth things out. I finished mine off with a clear coat of high gloss polyurethane. Some may not do this, but some of the pics I posted were taken a few weeks ago. It has held up pretty well since '95 when I built it. 
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Old 12-09-2011, 11:53 AM
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Default RE: Dumas 36

Hi xsthomas thanks for the reply. I will see how the hull looks after the wet sanding. I will probably finish it similar to yours with some high gloss urethane for the final coats.
I have the stuffing box, rudder post and support epoxied in. I will lay a piece of glass cloth over the whole outside unit to lock everything in.
Need to let the epoxy cure a little longer before I get into the sanding.
Thanks,
Fred
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Old 12-10-2011, 09:33 AM
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Default RE: Dumas 36

Boat doesn't look so good now LOL. I have the hull dry sanded with 80 grit. All the white powdery stuff is resin that has been sanded. Right now the hull is smooth but obviously has some big scratch marks only in the resin. After this is wet sanded it will be ready for final finish. I will be painting the bottom of the hull and the trim on top, then bury everything under some urethane clear coats.
Thanks,
Fred
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Old 12-10-2011, 12:20 PM
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Default RE: Dumas 36

Fred,

I guess I'm just not used to the Envirotex Lite. You first put the glass on with 100% thinned epoxy then the second coat was 70% thinned. After only those two coats you're sanding with 80 grit paper to knock off the high spots and prepare for wet/dry 220 wet sanding!?! Amazing!

I'm thinking of 'regular' epoxy thinned 20%, which is fairly thin then a second coat without thinning. If you let it cure you HAVE to sand "lightly" to knock off the wax before a third coat, then you can get a little tough with it before the wet sanding. Invirotex must be pretty THICK stuff.

BTW, good builders like yourself have preferences so I was wondering where you happen to buy your fiberglass?

Bob
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Old 12-10-2011, 04:38 PM
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Default RE: Dumas 36


Quote:
ORIGINAL: Check6

Boat doesn't look so good now LOL.
Hi Fred,

It looks exactly how it should in this phase! Keep up the good work!

-Rich.
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Old 12-12-2011, 02:56 PM
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Default RE: Dumas 36

Quote:
ORIGINAL: rblubaugh

Fred,

I guess I'm just not used to the Envirotex Lite. You first put the glass on with 100% thinned epoxy then the second coat was 70% thinned. After only those two coats you're sanding with 80 grit paper to knock off the high spots and prepare for wet/dry 220 wet sanding!?! Amazing!

I'm thinking of 'regular' epoxy thinned 20%, which is fairly thin then a second coat without thinning. If you let it cure you HAVE to sand ''lightly'' to knock off the wax before a third coat, then you can get a little tough with it before the wet sanding. Invirotex must be pretty THICK stuff.

BTW, good builders like yourself have preferences so I was wondering where you happen to buy your fiberglass?

Bob
Hi Bob,
This product works great for filling. I think the alcohol evaporates off and the resin remains. Usually only takes one coat after the initial
application to fill the glass weave. This is a very fine cloth so it doesn't take much. I used to buy my cloth from Dan Parsons but he passed away a few years ago. You can get some nice cloth from Nick Ziroli Jr. Models. I use 3/4 oz. cloth.
I have the whole boat wetsanded nice and smooth and now have the hull masked off for paint. Primer is on and I will fill all the bottom blemishes with Automotive glazing putty. Last two pics are a little fuzzy because the primer overspray is still in the air. I always wanted a grey cellar. LOL
Hope this helps,
Fred
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Old 12-12-2011, 03:54 PM
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Default RE: Dumas 36

Thanks Fred.
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Old 12-14-2011, 03:51 PM
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Default RE: Dumas 36

Slow and steady wins the race to the water! Nice progress!!!
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Old 12-16-2011, 10:36 AM
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Default RE: Dumas 36

OK I have the hatches completed with spray urethane and dark blue trim. I will be using this dark blue on the top part of the decking on the boat. It's looking good!!
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Old 12-16-2011, 11:03 AM
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Default RE: Dumas 36

Fred,

Will there be any nore wet sanding, polishing or additional coats of urethane? I ask because I notice what appear to be spray marks (dots) from the spray urethane. (I know, I know, from five feet away {standing up} you can't see anything )
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Old 12-16-2011, 11:08 AM
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Hi Bob,
There will probably be all of the above LOL. I'm not going to go super crazy but it will look very nice. I will be selling this when I'm finished.
Thanks Fred
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Old 12-16-2011, 01:45 PM
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Default RE: Dumas 36

Bottom of the hull is painted with Krylon Hunter green. It will have an almond colored waterline as well as almond colored seats. Should be a nice contrast.
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Old 12-16-2011, 02:49 PM
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Default RE: Dumas 36

It's lookin' good Fred!

-Rich.
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Old 12-16-2011, 03:29 PM
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Default RE: Dumas 36

Thanks Rich, I appreciate the comments.
Thanks,
Fred
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