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General control line discussion => Open Forum => Topic started by: Bootlegger on July 29, 2015, 12:59:23 PM

Title: lost foam glue
Post by: Bootlegger on July 29, 2015, 12:59:23 PM

 Somewhere I read that you can glue balsa to foam using white/yellow glue, but the memory bank is low on cash so I don't remember all the details..
 So can anybody refresh my memory??
                                     T I A...

Title: Re: lost foam glue
Post by: Tim Wescott on July 29, 2015, 01:12:46 PM

Yes, white glue and yellow glue work well.  You want to make sure that you give things time for the moisture to get out, though -- don't assembly in the morning and paint that evening or you'll have a heavy & weak join.

Title: Re: lost foam glue
Post by: RC Storick on July 29, 2015, 04:23:43 PM

Quote from: Bootlegger on July 29, 2015, 12:59:23 PM

Somewhere I read that you can glue balsa to foam using white/yellow glue, but the memory bank is low on cash so I don't remember all the details..
 So can anybody refresh my memory??
                                     T I A...

If you are applying wood to a foam wing use Z poxy and wipe it all off. Weight it in the cradle. You will think there is not enough glue to hold it but it will.

https://youtu.be/OgWUYBYgmIk

Title: Re: lost foam glue
Post by: Avaiojet on July 29, 2015, 06:46:03 PM

Robert,

Watched the video. I have some foam I'll be sheeting.

Hair spray. Did I miss where you explained it's use? Or what happens when it isn't used?

Charles

Title: Re: lost foam glue
Post by: David_Stack on July 30, 2015, 05:58:59 AM

Good Morning Charles;

  Robert of course can confirm, but my recollection is that a light coating of hairspray is applied on the side of the sheeting which is to be attached to the cores before the epoxy is applied.  It help minimize the amount of resin which is absorbed into the sheeting...

r/
Dave

Title: Re: lost foam glue
Post by: Bootlegger on July 30, 2015, 06:53:43 AM

Guy's I sure do thank y'all for the responses, they have been a big help..

Title: Re: lost foam glue
Post by: Avaiojet on July 30, 2015, 09:19:50 AM

Quote from: David_Stack on July 30, 2015, 05:58:59 AM

Good Morning Charles;

  Robert of course can confirm, but my recollection is that a light coating of hairspray is applied on the side of the sheeting which is to be attached to the cores before the epoxy is applied.  It help minimize the amount of resin which is absorbed into the sheeting...

r/
Dave

Dave,

Thanks for the reply. Even though I seen Robert do it, I'm afraid to do it that way.  n~

Seeing is believing and Robert does know his stuff.

I'm wondering what little weight is necessary to still pull it off? The foam I'm sheeting has no cores.

Is Z Poxy just Z Poxy? Or is it 5 min, 45 min, 24 hr?

Thanks

Title: Re: lost foam glue
Post by: David_Stack on July 30, 2015, 10:25:38 AM

Charles;

  Z-poxy is Zap Products name for their finishing resin.  They also offer 'traditional' epoxies with varying cure times...  According to the manufacturer, it has a 20 - 30 minute working time, and a cure time of 3 hours.

r/
Dave

Title: Re: lost foam glue
Post by: Avaiojet on July 30, 2015, 12:59:25 PM

Quote from: David_Stack on July 30, 2015, 10:25:38 AM

Charles;

  Z-poxy is Zap Products name for their finishing resin.  They also offer 'traditional' epoxies with varying cure times...  According to the manufacturer, it has a 20 - 30 minute working time, and a cure time of 3 hours.

r/
Dave

Dave,

Thanks for the reply.

Robert left his overnight?

What's the point of that if it cures in 3 hours?  n~

Title: Re: lost foam glue
Post by: john e. holliday on July 30, 2015, 01:16:09 PM

Almost all epoxies take 24 hours for fullcure.