View Single Post
  #8  
Old October 15th 13, 02:57 AM posted to rec.aviation.soaring
Frank Whiteley
external usenet poster
 
Posts: 2,099
Default Crack canopy at the sliding glass screw hole.

I've used this and it works very well. I don't find it available in the USA, but it appears to be available for export. There may be health or EPA reasons it's not available here. The trick with this is the balance between pot time and letting the bubbles rise out before application. It's a short window.

Acrifix 192 works well also, but I think the Tensol 70 is better. As Acrifix 192 cures with UV, you need a light or the ability to work outside on a sunny day.

Both require finishing kits. Although I was satisfied with my repairs, I've seen some brilliant examples where the cracks virtually vanished. Takes a lot work to do that.

Frank Whiteley

On Monday, October 14, 2013 5:27:45 PM UTC-6, Dave Martin wrote:
There is only one cement for perspex that is two part:



Tensol 70 with a hardener.



Then a Micromesh kit from Wings and Wheels for polishing.



Tensol 70 works by dissolving the two sides of the crack, then

setting hard and basically forms new perspex.



Tensol 12 a similar adhesive will stick but has no strength. Other

acrylic adhesives will stick but again have no strength.

As SXC says below its should be taken with care and plenty of

caution. It is liquid and runs and as it sets form strings and they

stick to canopies. so care and masking.



The process is simple, time consuming and requires infinite

patience. Space does not permit a full description of how to do

it. But small cracks are well within the scope of an owner.



The first step is to drill the end of the crack with a fine drill. or

hot needle. To stop it spreading. A red hot needle will give some

form of seal.



Dave