misty lake photo for Coroplast working page

Working with Coroplast

using scissors to cut corrugated plastic

For small holes a heated needle or nail will easily melt through and make a tidy hole.

Using a forstner bit to make holes in CoroplastPORTER-CABLE PC1014 Forstner Bit Set, 14-Piece
Making small holes in corrugated plastic.
using spade bit to make a hole

Cut corners can always be covered with tape to make them less scratchy and to strengthen it.

scoring Coroplast New York Wire 90611 2-Wheel Wood Handle Screen Tool

Before Gluing it sometimes helps to clean the surface with methylated spirits. This is also known as denatured alcohol.

After reading this page, Rick Webber, UK sent me the following email. Many thanks to Richard Webber for sharing.

Bonding Coroplas / Corex

Many years ago (2002) I was making and selling many SPAD aircraft kits and I had very little success with flashing and CA which was the recommended method at that time.

My solution was to contact an adhesive manufacturer in my local city and challenged them to bond some sample corex that I sent them.

Within two weeks they returned me a sample bottle of a CA they code named SF100 (Now available from 3M), along with my corex samples well and truly bonded, in fact one of the planes made back then with SF-100 is still flying today without any problems.

I, like you test the bonds to destruction and in all cases the corex surface was ripped to shreds with large chunks still bonded to the other test part.

The method used to create such a strong and lasting joint only requires the corex, (both parts), to be cleaned with methylated spirit and allowed to evaporate prior to putting spots of adhesive every half to three quarter inch onto one surface, place the two surfaces together and apply even pressure along the length of the join.

I am aware that 3m Scotch-Weld SF-100 is not a cheep adhesive but it really does the job as long as it is fresh and stored at low temperature out of direct sunlight.

Hope this is of interest


email me : Christine