Wheelsmith is well versed in manufacturing wheels for lakes racing, and even have their own jigs for the installation of Moon disc tabs. Such jigs are regular discs with sections cut away, allowing access to weld the tabs to the rim. These are available from Mooneyes. Here the tabs have had their corners radiused for better fitment, and are attached to the jig. With the jig placed on the wheel, the tabs can be welded in place.