I was wondering if the matte medium you see in the craft store for mounting photographs etc. is the same or close enough as the product sold by Scenic Express? I’ve used S/E mat-medium in the past and like it for ballast primarily but hate paying for shipping if I can drive 15 minutes and take it off the shelf?
Matte Medium is exactly what W/S and Scenic Express make their stuff out of. Dilute it with 3-4 parts water to 1 part matte medium and you should have a similar mix.
Although I’ve never used the SE matte medium I’m reasonably sure that it and the matte medium from craft stores are equivalent. I’ve used matte medium from art supply stores and from Michael’s craft store and have not seen a noticeable difference.
Yup, white glue is ‘cheaper’. But if you don’t like lots of track noise, I would go with Matte Medium. It dries soft, not rock hard like the white glue(which transmits the track noise to your plywood/foam base)