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Old 06-21-2017, 08:36 PM   #1
Bowtech32
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Default Pink Foam+Fiberglass=Round Bowblind

This may take some time, but in the process of building a 6x6 round fiberglass blind. Tired of throwing something together or paying $1k or more on a good blind. The plastic blinds are ok but no insulation and in October it is like being in a sauna.

Using 1" pink foam board and epoxy resin and cloth, did a few test pieces and dang I could not believe how light and strong it was. This will have very little wood in it, mainly floor, joints and some around the windows and doors. I am going for 1 man setup, may even do interchangeable wheels. We will see when I get there.

Here is what I did today, sheets cut and some glued together and a few cuts down the sheets so I can bend them. Hopefully more tomorrow.

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Old 06-21-2017, 09:02 PM   #2
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This should be a fun one to follow.
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Old 06-21-2017, 09:15 PM   #3
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Do some research on "poor man's fiberglass", a concoction of Titebond II wood glue. A lot cheaper and if taken care of it lasts.

http://www.instructables.com/id/Poor...hing-weatherp/

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Old 06-21-2017, 09:26 PM   #4
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Quote:
Originally Posted by dogcatcher View Post
Do some research on "poor man's fiberglass", a concoction of Titebond II wood glue. A lot cheaper and if taken care of it lasts.

http://www.instructables.com/id/Poor...hing-weatherp/
I seen it on the tear drop forum, I did 3 test pieces, TB11 with 10oz cloth, TB11 with burlap and epoxy resin and 6oz glass cloth. The TB11 and cloth was not bad, but the epoxy and glass was far superior in strength and bonding. I will spend an extra couple hundred for it to last. The 2' x 6" peice of 1" foam I did with the glass would hold my weight without breaking. I was impressed by that.
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Old 06-22-2017, 11:49 AM   #5
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Well got it upright and starting to look like something. Just need to shape it a bit more and lay some glass on the seams

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Old 06-22-2017, 01:20 PM   #6
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This going to be awesome.
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Old 06-22-2017, 02:02 PM   #7
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Tagged, looks good
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Old 06-22-2017, 02:09 PM   #8
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I didn't know that pink foam would hold up under fiberglass resin.
Anxious to see the results ... as well as the final cost.
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Old 06-22-2017, 02:10 PM   #9
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Subb'd


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Old 06-22-2017, 02:16 PM   #10
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In to see how this turn out
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Old 06-22-2017, 02:30 PM   #11
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in for progress
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Old 06-22-2017, 02:40 PM   #12
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Interesting. I'm also anxious to see the end product. That's a whole lot cheaper and easier than plywood, but messier too. It also should be incredibly light.
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Old 06-22-2017, 03:29 PM   #13
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Interesting concept that I've never seen or heard of. Please share as many assembly pics as possible.
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Old 06-22-2017, 03:48 PM   #14
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Laid a little bit of fiberglass, hard to see in the pics because it wets out clear. This is 6oz cloth.

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Old 06-22-2017, 03:49 PM   #15
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Quote:
Originally Posted by ultrastealth View Post
Interesting. I'm also anxious to see the end product. That's a whole lot cheaper and easier than plywood, but messier too. It also should be incredibly light.
It will not be cheaper, but it will be a whole lot lighter.
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Old 06-22-2017, 03:50 PM   #16
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Quote:
Originally Posted by Texastaxi View Post
I didn't know that pink foam would hold up under fiberglass resin.
Anxious to see the results ... as well as the final cost.
Epoxy resin will not melt the foam, just about every other type of resin will.
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Old 06-22-2017, 03:52 PM   #17
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Quote:
Originally Posted by Gclyde28 View Post
In to see how this turn out
Me too, this will be the first one I have built this way and it may be the hardest way possible. Should have done a square on first, but what fun is that
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Old 06-22-2017, 06:00 PM   #18
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So what is the plan for the roof and door? I am liking this idea....a lot
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Old 06-22-2017, 08:51 PM   #19
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Quote:
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So what is the plan for the roof and door? I am liking this idea....a lot
Have a plan for doors and roof, it is going to be billant or an epic failure. Doors will be square off and flat. Roof will be the pour foam they put in boats for flotation and sanded into a dome.
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Old 06-22-2017, 08:55 PM   #20
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Nice looking build project. Do you have connections to epoxy resin supplier, because that size blind could end up costing the normal guy +300 just in resin easily. I look forward to the wnd product.
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Old 06-22-2017, 08:58 PM   #21
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Love these builds. Tuned in!
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Old 06-22-2017, 09:00 PM   #22
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Quote:
Originally Posted by topshot View Post
Nice looking build project. Do you have connections to epoxy resin supplier, because that size blind could end up costing the normal guy +300 just in resin easily. I look forward to the wnd product.
I wish I did, and you are pretty close
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Old 06-22-2017, 10:28 PM   #23
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^
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Old 06-23-2017, 03:14 AM   #24
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I actually just tried this a few months ago. I got a bunch of camo burlap on clearance at Walmart and tried normal off-the-shelf resin from Home Depot. It melted the foam. Maybe are used to much activator since it was just a small test batch.
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Old 06-23-2017, 06:30 AM   #25
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Quote:
Originally Posted by GMG View Post
I actually just tried this a few months ago. I got a bunch of camo burlap on clearance at Walmart and tried normal off-the-shelf resin from Home Depot. It melted the foam. Maybe are used to much activator since it was just a small test batch.
He's using epoxy resin ... the resin you got was fiberglass (polyester) resin.
I missed that part when I first read it.
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Old 06-24-2017, 08:16 AM   #26
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Any update ?? Interesting project.
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Old 06-24-2017, 08:33 AM   #27
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Get to work, we need an update!
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Old 06-24-2017, 08:51 AM   #28
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Quote:
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Get to work, we need an update!
This!!!!

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Old 06-24-2017, 09:04 AM   #29
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Quote:
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Any update ?? Interesting project.
Most likely I will not get anything done. Coaching baseball and our tournament is this weekend. Rained out today but taking the kids for Batting practice for game tomorrow
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Old 06-24-2017, 10:02 AM   #30
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In for the end product

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Old 06-26-2017, 11:37 AM   #31
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Did get much done on the weekend, you really can't tell anything with laying the fiberglass anyway. But there was a few folk asking about assembly.

Made 1 mistake by using PL300 glue to join the sheets. On my test joint I just used gorilla glue (in the caulking tube) it works very well. I ran out of it (in goes fast) and home depot did not have any so I bought the PL300 which is for foam. It did not set even after 24 hours. That is why I used the red packing tape. I would not do that again. Always use a test piece before you try this to see how well it works.

In this pic it show how they are joined. Can't think of the name of the joint but all I did was routed a grove o both pieces and uses a piece of wood to join them. I guess this don't matter much once the fiberglass is layed since that will be what holds everything together but it will make it easier to assemble.

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Old 06-26-2017, 11:39 AM   #32
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What are you planning to fill any gaps with prior to glassing? On those seams even if there is a tiny gap that equals air under your cloth which will be a bad thing and cause delamination when that blind hits the sun.


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Old 06-26-2017, 11:42 AM   #33
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Big gaps I am using great stuff foam. Small seems just mixing some saw dust with the epoxy and using it as a filler.

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Old 06-26-2017, 11:50 AM   #34
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Big gaps I am using great stuff foam. Small seems just mixing some saw dust with the epoxy and using it as a filler.

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Good deal. Since you probably are not concerned with weight, talc is cheap and makes a good thickening agent for epoxy as well. Takes a bunch of it though and unfortunately it sags if you try to use it vertically.


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Old 06-28-2017, 05:08 PM   #35
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For anyone that has layed fiberglass, it is not that hard but way time consuming. A lot more time than I expected. Here is a little more I did over a larger gap. I used the loctite version of great stuff to fill the gap first. Hopefully I will have the first coat on in a day or 2. It takes me a while because only get 30 min here and there to work on it.

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Old 07-16-2017, 10:07 AM   #36
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Any updates?
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Old 07-16-2017, 02:37 PM   #37
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Life is getting in the way, once I get the door cut I will post an update. Have a little left to do on laying glass on the outside
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Old 07-16-2017, 04:37 PM   #38
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I'm in
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Old 07-16-2017, 04:44 PM   #39
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Cool! Following.
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Old 07-17-2017, 03:58 PM   #40
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in.
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Old 07-17-2017, 04:23 PM   #41
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In
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Old 07-22-2017, 01:46 PM   #42
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Can you list what you purchased and where you purchased? Curious to see the cost for all of this
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Old 07-22-2017, 11:14 PM   #43
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Quote:
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Can you list what you purchased and where you purchased? Curious to see the cost for all of this
Pink foam from Home Depot
Epoxy resin, 3 pound pour foam and 6oz Fiberglas clothe from US composites

Going to have $700 into this before I finish, but I will have way too much clothe left over.

Sorry I have not worked on this much lately, but have been really busy with family stuff
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Old 07-23-2017, 05:01 AM   #44
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Very cool idea. Tuned in to see how it holds up.


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Old 08-29-2017, 04:05 PM   #45
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Have not had a chance to work on it for a while, this is turning out to be NEXT year's blind. I worked on it a bit the other day, cut the door and started on the roof. I need to order more foam, needed about twice the amount I thought I would. The yellow foam is really strong... Here is some pics.

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Old 08-29-2017, 04:06 PM   #46
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Once I get enough foam on top then I can shape it. Looks pretty rough right now...

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Old 09-01-2017, 10:10 AM   #47
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Following intently. Good job!
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Old 09-01-2017, 06:45 PM   #48
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Looking good so far!


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Old 09-08-2017, 10:06 AM   #49
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Following
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Old 09-14-2017, 08:05 AM   #50
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in
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