Hence, at a production level of 500 units, the total electric cost is $8,000 [$3,000 + ($10 x 500)]. The mixed cost illustrated in the above chart is called a step function. An example of such cost behavior would be the total salary expense for shift supervisors.
Product Summary. A plastic tack is a kind of tack made of the material of plastic which is a material of a wide range of synthetic or semi-synthetic organic solids used in the manufacture of industrial products. Plastics are typically polymers of high molecular mass, and may contain other substances to improve performance and/or reduce production costs.
I use Aleens Tacky Glue nfound in many craft stores in a gold bottle. I find it adheres better than Elmers. I also use bamboo skewers to pin the foam. I make a pilot hole, fill with glue and push the skewer through and into the next piece.