ISEN-ASTC-L is a service of the Association of Science-Technology Centers Incorporated, a worldwide network of science museums and related institutions. ***************************************************************************** We have an exhibit that uses a 24 volt fan to blow sandblasting sand into dunes, channels, and other landforms. The fan is housed within the sandscape itself, and over time, the fan becomes gunked with the sandblasting sand (which is actually a fine-grained glass) and burns out. Does anyone know of a fan that would achieve the same results but not burn out, or does anyone know of a sand that behaves as nicely as the sandblasting sand but wont gunk up the fan? --Kim Kim Hunter Senior Director, Exhibit Development Orlando Science Center 407/514-2061 [log in to unmask] Inspire Science Learning for Life *********************************************************************** For information about the Association of Science-Technology Centers and the Informal Science Education Network please visit www.astc.org. Check out the latest case studies and reviews on ExhibitFiles at www.exhibitfiles.org. The ISEN-ASTC-L email list is powered by LISTSERVR software from L-Soft. To learn more, visit http://www.lsoft.com/LISTSERV-powered.html. To remove your e-mail address from the ISEN-ASTC-L list, send the message SIGNOFF ISEN-ASTC-L in the BODY of a message to [log in to unmask]