Abstract: Techniques are described for providing users with access to computer networks, such as to enable users to interact with a remote configurable network service in order to create and configure computer networks that are provided by the configurable network service for use by the users. Computer networks provided by the configurable network service may be configured to be private computer networks that are accessible only by the users who create them, and may each be created and configured by a client of the configurable network service to be an extension to an existing computer network of the client, such as a private computer network extension to an existing private computer network of the client. If so, secure private access between an existing computer network and new computer network extension that is being provided may be enabled using one or more VPN connections or other private access mechanisms.

Abstract: A dental dam apparatus is provided for use with an associated dental molding system including an impression tray and a pour dam. The dental dam includes a substantially planar body member, and an attachment portion on the front edge of the body member. The body member defines a generally “U” shaped front edge and a generally straight rear edge extending between ends of the “U” shaped front edge. The attachment portion is configured to selectively engage a generally “U” shaped inner surface of the impression tray and to attach the body member with the tray. In that way, dental molding material poured into the dental molding system with the pour dam surrounding the impression tray and with the body member attached with the impression tray is blocked by the body member from entering into a portion of an area defined by the “U” shaped inner surface of the impression tray.

Abstract: A dental dam apparatus is provided for use with an associated dental molding system including an impression tray and a pour dam. The dental dam includes a substantially planar body member, and an attachment portion on the front edge of the body member. The body member defines a generally “U” shaped front edge and a generally straight rear edge extending between ends of the “U” shaped front edge. The attachment portion is configured to selectively engage a generally “U” shaped inner surface of the impression tray and to attach the body member with the tray. In that way, dental molding material poured into the dental molding system with the pour dam surrounding the impression tray and with the body member attached with the impression tray is blocked by the body member from entering into a portion of an area defined by the “U” shaped inner surface of the impression tray.

Abstract: A device for making miter cuts in workpieces includes a saw guide pivoted to either a bottom surface B or a top surface A of a board. The saw guide includes two plates spaced above the board surfaces by a pivot assembly and a swing assembly. Almost any commercially available circular power saw may be accommodated by placing the saw base on the plates, positioning the saw blade within alignment slots in the assemblies, and adjusting rails on the plates against the saw base. A keeper on one of the rails prevents the saw from jumping out of the saw guide. When the rails are properly adjusted, the circular saw blade will travel along a saw line between the plates from alignment slot to alignment slot. The top surface A of the board has a straight edged backup adjacent a planar work area. 90.degree. and 45.degree. stops on the top surface reliably and accurately position the saw line normal to or at a 45.degree. angle to the straight edge and aligned with 90.degree. and 45.degree. slots in the backup.