If you're serious about improving the original you should remove the original top platter competely and make something like a diy Ringmat. You may find Jonathan Noble's writings interesting - he spent a long time fiddling with the mat on his 401 and his results were examplary.
http://www.theanalogdept.com/diy'ing_a_time_machine.htm
http://www.theanalogdept.com/diy'ing_a_time_machine.htm
DIY mat
A good mat can be made of polyurethane compound, a bit messy but result is worth it. Electrolube UR 5083 makes a good transparent mat
Start with taping the holes in iner and outher platter, use 3M micropore tape. Cover entire platter and central shaft with thin saranwrap as smooth as possible. Cut clean around outher edge and apply microporetape around platter. Let tape protrude 10mm above platter as a barrier. This makes a tight tank to pour the potting compound in. Platter must be level! Allow to cure for 24 hours and You´ll have agood mat totaly adapted to the platter.
Keep the cat out of the workingarea during this project.
A good mat can be made of polyurethane compound, a bit messy but result is worth it. Electrolube UR 5083 makes a good transparent mat
Start with taping the holes in iner and outher platter, use 3M micropore tape. Cover entire platter and central shaft with thin saranwrap as smooth as possible. Cut clean around outher edge and apply microporetape around platter. Let tape protrude 10mm above platter as a barrier. This makes a tight tank to pour the potting compound in. Platter must be level! Allow to cure for 24 hours and You´ll have agood mat totaly adapted to the platter.
Keep the cat out of the workingarea during this project.
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