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Cox Engine of The Month
So, if you were going to permanently attach plastic to balsa
Page 1 of 1
So, if you were going to permanently attach plastic to balsa
How would you do it?
A, Wouldn't do it.
B, Some sort of cement.
C, Mechanical.
D, Other.
A, Wouldn't do it.
B, Some sort of cement.
C, Mechanical.
D, Other.
rsv1cox- Top Poster
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Posts : 11247
Join date : 2014-08-18
Location : West Virginia
Re: So, if you were going to permanently attach plastic to balsa
Oh man that's a good question. I have built some SPADS over the years and medium CA was the winner for me for a plastic to plastic joint. Involved sanding to rough the plastic surface, then clean good with alcohol. I guess it depends what the function of the joint is too. I imagine plastic to balsa with CA would be reasonable to test on some scrap.
layback209- Gold Member
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Join date : 2017-10-13
Age : 38
Location : Okotoks
Re: So, if you were going to permanently attach plastic to balsa
B...since you asked.for a choice.
Ok, smartalec answer mode off. I use E6000, which is a clear, fuel proof glue akin to Shoo Goo or silicone glue. It will heat plastic if used too heavily. Used lightly/sparingly, it pulls off like a bandaid.
There is also canopy glue. I think you can find it under that wording.
Ok, smartalec answer mode off. I use E6000, which is a clear, fuel proof glue akin to Shoo Goo or silicone glue. It will heat plastic if used too heavily. Used lightly/sparingly, it pulls off like a bandaid.
There is also canopy glue. I think you can find it under that wording.
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944_Jim- Diamond Member
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Posts : 2022
Join date : 2017-02-08
Age : 59
Location : NE MS
Re: So, if you were going to permanently attach plastic to balsa
Bob, I use epoxy which works very well. In case of Coroplast, first remove the chemical layer that is on the plastic with thinner or by passing a flame very quickly over the plastic. The bulkheads of my free flight plane X12 are glued like that.
https://www.coxengineforum.com/t12774-my-latest-free-flight-plane-a-peewee-powered-jet-fighter-don-t-miss-the-vid
But I also glued entire wings to a balsa fuse.
https://www.coxengineforum.com/t9302-flying-wing-free-flight-model
https://www.coxengineforum.com/t12774-my-latest-free-flight-plane-a-peewee-powered-jet-fighter-don-t-miss-the-vid
But I also glued entire wings to a balsa fuse.
https://www.coxengineforum.com/t9302-flying-wing-free-flight-model
OVERLORD- Diamond Member
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Join date : 2013-03-19
Age : 58
Location : Normandy, France
Re: So, if you were going to permanently attach plastic to balsa
Thanks everyone. I just want to finish up this long term project and get it off my workbench. Minwax sanding sealer, Krylon white primer/Krylon gloss white. Still have to cut the elevator, hinge and attach it.
I have done three or four of these plastic tail-less wonders and have forgotten exactly what I used, but I think just plain 5 minute epoxy, but it could have been Testors red tube plastic cement or something else. Wanted to see what other people used. Got to reeducate myself by doing some tests.
I'm not sure what I used on this one, I knew i wanted to try Testors but it could have been something else. Turned out well, solid and has been bumped around over the years.
Another thing, the wings had repositioned themselves to about a 30 degree up dihedral, way, way out of scale. So for the last two years it has been setting in that hot loft storage area with weights on the wings and it's beginning to have an effect. Now they are almost normal.
Pretty sure I used epoxy on this one. It shows.
Not serious flyers, but I'm sure they would in a plasticky way.
I have done three or four of these plastic tail-less wonders and have forgotten exactly what I used, but I think just plain 5 minute epoxy, but it could have been Testors red tube plastic cement or something else. Wanted to see what other people used. Got to reeducate myself by doing some tests.
I'm not sure what I used on this one, I knew i wanted to try Testors but it could have been something else. Turned out well, solid and has been bumped around over the years.
Another thing, the wings had repositioned themselves to about a 30 degree up dihedral, way, way out of scale. So for the last two years it has been setting in that hot loft storage area with weights on the wings and it's beginning to have an effect. Now they are almost normal.
Pretty sure I used epoxy on this one. It shows.
Not serious flyers, but I'm sure they would in a plasticky way.
rsv1cox- Top Poster
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Posts : 11247
Join date : 2014-08-18
Location : West Virginia
Re: So, if you were going to permanently attach plastic to balsa
944_Jim wrote:B...since you asked.for a choice.
Ok, smartalec answer mode off. I use E6000, which is a clear, fuel proof glue akin to Shoo Goo or silicone glue. It will heat plastic if used too heavily. Used lightly/sparingly, it pulls off like a bandaid.
There is also canopy glue. I think you can find it under that wording.
the Shoo Goo is an interesting idea! I have looked at it many times in the hardware store and wondered about it. I know for plastic to balsa, my default would be sand both surfaces, clean etc. and use epoxy. But the Shoo Gloo is a really interesting thought and worth testing on some pieces to see how it goes.
The other thing sometimes I do and it might not suit this application is I pin things (not just model planes but all kinds of stuff I fix that otherwise is hard to fix). Drill/dremmel very very small holes in things where possible and essentially "pin" them using really really thin wire or even dress making pins cut and sanded / dremelled down even thinner and glued in place. That provides a bit of mechanical strength also.
Yabby
Yabby- Platinum Member
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Posts : 712
Join date : 2021-06-08
Location : Yorke Peninsula South Australia
E6000
http://eclecticproducts.com/products/e6000/e6000-mini-tubes.html
Check the Data Sheets
I have personally used this for canopies and cowls on my boys 1/2A DPC Models clones of 1960s Scientific kits. I no longer use a bunch to glue the plastic to pre-doped wood. It generated enough heat
to warp a few places. I now use it sparingly on cowls, or the very lightest amount to create a positive sealing bead between cowl and fuselage. When I was researching this stuff 12-18 months ago, I picked up on chemical makeup being much like ShooGoo...but don't buy a tube of ShooGoo to test me.
Checking now, the MSDS looks almost the same for both products. This is no surprise to me since they come from the same manufacturer.
I get E6000 in little 4-packs (twice in the last 5 years) from Michaels Hobby Store. It is what I could get locally. If I could locally source Canopy Glue, i would be glad to try it. ISTR the Canopy Glues have the numbers 55 or 56 in the name regardless of distributor/vendor.
Check the Data Sheets
I have personally used this for canopies and cowls on my boys 1/2A DPC Models clones of 1960s Scientific kits. I no longer use a bunch to glue the plastic to pre-doped wood. It generated enough heat
to warp a few places. I now use it sparingly on cowls, or the very lightest amount to create a positive sealing bead between cowl and fuselage. When I was researching this stuff 12-18 months ago, I picked up on chemical makeup being much like ShooGoo...but don't buy a tube of ShooGoo to test me.
Checking now, the MSDS looks almost the same for both products. This is no surprise to me since they come from the same manufacturer.
I get E6000 in little 4-packs (twice in the last 5 years) from Michaels Hobby Store. It is what I could get locally. If I could locally source Canopy Glue, i would be glad to try it. ISTR the Canopy Glues have the numbers 55 or 56 in the name regardless of distributor/vendor.
_________________
Never enough time to build them all...always enough time to smash them all!
944_Jim- Diamond Member
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Posts : 2022
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Re: So, if you were going to permanently attach plastic to balsa
Hmm. Shoo goo is available locally at Lowes, couldn't figure out how to order e6000 from their website. Seemed to be no ordering instructions just information regarding the product. Maybe retail only.
rsv1cox- Top Poster
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Posts : 11247
Join date : 2014-08-18
Location : West Virginia
Re: So, if you were going to permanently attach plastic to balsa
Bob,
Since I was endorsing the product, and declared a similarity, I posted the manufacturer links...specifically for their weak MSDS sheets. Here are sample shots. The middle one shows distorted plastic from excessive use on the cowl (look just above the leading edge...the round spot on the cowl's back edge). The canopies however, did just fine with a thin bead around the contact points.
Since I was endorsing the product, and declared a similarity, I posted the manufacturer links...specifically for their weak MSDS sheets. Here are sample shots. The middle one shows distorted plastic from excessive use on the cowl (look just above the leading edge...the round spot on the cowl's back edge). The canopies however, did just fine with a thin bead around the contact points.
_________________
Never enough time to build them all...always enough time to smash them all!
944_Jim- Diamond Member
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Posts : 2022
Join date : 2017-02-08
Age : 59
Location : NE MS
Re: So, if you were going to permanently attach plastic to balsa
'Ere ya go Bob,rsv1cox wrote:Hmm. Shoo goo is available locally at Lowes, couldn't figure out how to order e6000 from their website. Seemed to be no ordering instructions just information regarding the product. Maybe retail only.
https://www.amazon.com/s?k=e6000+glue&crid=1D657CN7DJ7IL&sprefix=e600%2Caps%2C185&ref=nb_sb_ss_ts-doa-p_1_4
Other Bob
If you scroll to the bottom of the first Amazon/E600 product page,
you'll find Ritz peanut butter crackers in bulk.
dckrsn- Diamond Member
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Age : 71
Location : Long Island, New York
Re: So, if you were going to permanently attach plastic to balsa
Thanks Bob, Got it. I'm ordering the twin small four pack but I don't see applicators. Small tubes better for me, I use them up before they turn hard like Walmart's CA's.
Didn't see Ritz. I got music and Steinbeck there.
Didn't see Ritz. I got music and Steinbeck there.
rsv1cox- Top Poster
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Posts : 11247
Join date : 2014-08-18
Location : West Virginia
Re: So, if you were going to permanently attach plastic to balsa
I didn't wait for the e6000, used this instead. From what I have read about e it's about the same, regardless the plastic to painted balsa is excellent. Like e6000 it's a slow working gel.
I built the new tail pieces out of balsa and used a metal rod to connect the two split elevator halfs. Then connected to the bell crank rod. Throw is slight but sufficient for flight. I soaked the spinner in brake fluid to remove the slopped on sliver paint and will probably do the same for the wing tips. Motor is new and unused. I will snip off the looped connector to the lead outs.
These Fly-em are incredibly small to be sporting a .049.
I don't know what to do about the bent wings having mixed results using a heat gun.
I built the new tail pieces out of balsa and used a metal rod to connect the two split elevator halfs. Then connected to the bell crank rod. Throw is slight but sufficient for flight. I soaked the spinner in brake fluid to remove the slopped on sliver paint and will probably do the same for the wing tips. Motor is new and unused. I will snip off the looped connector to the lead outs.
These Fly-em are incredibly small to be sporting a .049.
I don't know what to do about the bent wings having mixed results using a heat gun.
rsv1cox- Top Poster
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Posts : 11247
Join date : 2014-08-18
Location : West Virginia
Re: So, if you were going to permanently attach plastic to balsa
I have two Fly em Zero's. The .049 doesn't overpower it but it does move pretty fast. The exciting part is that the engine actually runs and it didn't puke it's crank out the front. I took one of the cowlings off and I lost it or I should say misplaced it for the past 20 years.
Ken Cook- Top Poster
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Join date : 2012-03-27
Location : pennsylvania
Re: So, if you were going to permanently attach plastic to balsa
20 years Ken, it might be a gonner. Take a leaf blower to your workshop, I have found many lost airplane and MG parts that way.
Added a decal to the tail and cut off the clips to the swivels. Could be flown but I probably never will do it.
It's going to be a wall hangar as soon as I can buld a rack for it. No place at the Inn to put it.
Might as well do one for the Zero too.
Added a decal to the tail and cut off the clips to the swivels. Could be flown but I probably never will do it.
It's going to be a wall hangar as soon as I can buld a rack for it. No place at the Inn to put it.
Might as well do one for the Zero too.
rsv1cox- Top Poster
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Posts : 11247
Join date : 2014-08-18
Location : West Virginia
Re: So, if you were going to permanently attach plastic to balsa
Repair looks good , so I guess the glue you used worked out alright , They will look better and last longer on the wall
getback- Top Poster
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Re: So, if you were going to permanently attach plastic to balsa
getback wrote:Repair looks good , so I guess the glue you used worked out alright , They will look better and last longer on the wall
My old guy spastic hands caused them to be bumped a couple of times and they still held.
I Knocked out the racks for the Zero and BF-109 this morning. The family snickered when I scavanged the shelves from my daughters old TV/Stereo console....guess whose laughing now. Saved me a lot of sanding and staining. Still had to stain the table saw cut bitter ends. I take pictures as memory prompts for me. What did I use to stain/paint/fix that thing? Answered a lot of questions for me over the years.
The Zero is by far the better of the Fly-ems. Thicker plastic and the Zero design helps.
rsv1cox- Top Poster
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Re: So, if you were going to permanently attach plastic to balsa
Where's the meatballs on your wings?
Ken Cook- Top Poster
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Join date : 2012-03-27
Location : pennsylvania
Re: So, if you were going to permanently attach plastic to balsa
Ya know, I never noticed that, probably did but never registered. You hit 80 and everything goes south.
Sent me downstairs to see if the other one had them, nope. Measured the fuselage one and came up with about 3/4". See if I can find one on-line and dump it on some sticky backed paper or get a decal off ebay something I hesitate to do, swore off that. Got too much stuff.
Got the Zero and BF-109 mounted and hung. Gives me room where the Zero was to get the T-28 up off the floor.
Just does not want to go vertical
Getting crowded, got to install an ATC. Still have room to get out the Fly-em Spitfire and put it above and to the right of the big P-51.
Fly-ems. Not serious stuff, but still an important part of nitro powered model airplanes and probably got many people started in the hobby.
Sent me downstairs to see if the other one had them, nope. Measured the fuselage one and came up with about 3/4". See if I can find one on-line and dump it on some sticky backed paper or get a decal off ebay something I hesitate to do, swore off that. Got too much stuff.
Got the Zero and BF-109 mounted and hung. Gives me room where the Zero was to get the T-28 up off the floor.
Just does not want to go vertical
Getting crowded, got to install an ATC. Still have room to get out the Fly-em Spitfire and put it above and to the right of the big P-51.
Fly-ems. Not serious stuff, but still an important part of nitro powered model airplanes and probably got many people started in the hobby.
rsv1cox- Top Poster
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Posts : 11247
Join date : 2014-08-18
Location : West Virginia
rsv1cox- Top Poster
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Posts : 11247
Join date : 2014-08-18
Location : West Virginia
Can we work together?
rsv1cox wrote:How would you do it?
A, Wouldn't do it.
B, Some sort of cement.
C, Mechanical.
D, Other.
E. the only that lead to success is truth. email, [spam]@gmail.com
remand- Banned
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Re: So, if you were going to permanently attach plastic to balsa
Always room for one more.
It occured to me that Testors Cosmic Wind was a Fly-em too so I built a rack and added it. Mark Boesen's thread about it here:
https://www.coxengineforum.com/t4126-testors-cox-cosmic-wind
Like most of my stuff it was bought as a project.
I always liked the look and the belly pan's design helped add some camber to the replacement wing.
Test fitting
It occured to me that Testors Cosmic Wind was a Fly-em too so I built a rack and added it. Mark Boesen's thread about it here:
https://www.coxengineforum.com/t4126-testors-cox-cosmic-wind
Like most of my stuff it was bought as a project.
I always liked the look and the belly pan's design helped add some camber to the replacement wing.
Test fitting
rsv1cox- Top Poster
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Re: So, if you were going to permanently attach plastic to balsa
Bob,
Where is the Mossie?
And in the bone yard...background airplane with longer canopy...do I spy with my little eye a twin? What is it?
Where is the Mossie?
And in the bone yard...background airplane with longer canopy...do I spy with my little eye a twin? What is it?
_________________
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944_Jim- Diamond Member
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Re: So, if you were going to permanently attach plastic to balsa
944_Jim wrote:Bob,
Where is the Mossie?
And in the bone yard...background airplane with longer canopy...do I spy with my little eye a twin? What is it?
It's center stage on the game table pictured above Jim. Still unflown but loved. Enya's a little stiff from neglect. Waiting for one of the hot sticks here to show up and fly it.
I couldn't ID the other plane that you mentioned.
I imagine some think it strange, hanging models on the wall. But I like getting them out where I can see them not stuffed away in a closet somewhere. But I have to admit, I got a bunch sitting there also.
rsv1cox- Top Poster
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