http://www.jgreer.com/blog News, Information, and Tips about all the products we carry! Tue, 30 Mar 2010 23:57:15 +0000 http://backend.userland.com/rss092 en Out latest foam is an 8# density two part polyurethane foam.  The primary usage is for the manufacture of simulated wood picture frames- but it is also useful for making castings, movie props, and as a stiffening and backup material for fiberglass laminates. http://www.jgreer.com/blog/2010/03/8-density-foam/ We have a new product intended for making vacuum form molds and tools.  It is called AeroMarine 81188 a/b.  It is a heavily filled, non shrinking polyurethane that can form plastics at temperatures to 325F. In addition to vacuum form molds, it can be used for casting machine parts. http://www.jgreer.com/blog/2010/03/new-vacuum-form-tooling-product/ We have looked for years for a good shopping cart system that was easy to use and met these requirements: 1. Our customer would never have to choose a login name and password. We avoid sites that make us remember anything or do any unnecessary typing. 2. It must accommodate the ... http://www.jgreer.com/blog/2010/03/our-new-shopping-cart/ There are three methods of fiber glassing a wooden structure such as a boat. 1. Drape the cloth over the structure then apply the resin over the cloth so that the resin soaks through the cloth onto the wood. The advantage of this method is that the fiberglass is easily ... http://www.jgreer.com/blog/2010/03/fiberglassing/ AeroMarine Casting Resin is a polyurethane polymer that frequently exudes an oily film as it cures.  This film seems to dissipate a day or two after curing.  It is also possible to prime the casting resin with Krylon Fusion spray paint before applying any other paint.   If possible, let ... http://www.jgreer.com/blog/2010/03/painting-casting-resin/ The best way to remove cured epoxy is usually with a heat gun. Home Depot sells some inexpensive heat guns for under $30- They look like a hair dryer but they put out much more heat. Avoid breathing the fumes of the heated epoxy. A less satisfactory method is to ... http://www.jgreer.com/blog/2010/03/how-to-remove-cured-epoxy/ A customer called recently asking how large of the silicone rubber mold could possibly be made. I told him that the largest item I have ever seen made have been life sized palm trees. Actually I've seen quite a few palm trees molded in silicone rubber molds. Typically these trees ... http://www.jgreer.com/blog/2010/01/fake-trees-silicone-rubber-molds/ We now stock a black rubber powder that is used to extend latex rubber molds.  It looks like car tires ground up into a very fine powder.  After you have brushed on a few layers of pure latex, you can use this powder to extend and thicken the latex.  Currently ... http://www.jgreer.com/blog/2010/01/extend-latex-mold-rubber-save/ Climbing walls in gyms have become very popular. We have a lot of customers making molds for climbing holds as well as making the actual climbing holds themselves.  It's a fairly easy process, since climbing holds are generally simple shapes. The two products to use are: AeroMarine Casting Resin Aeromarine 128 Silicone Moldmaking ... http://www.jgreer.com/blog/2010/01/making-climbing-holds-and-molds/ We are primarily an internet business but we do have a warehouse that stocks our products in San Diego. It is open to the public Monday- Friday from 9am until 4pm. http://www.jgreer.com/blog/2010/01/walk-in-hours/