awty
Member
Hi all
Thought I would share my latest plinth build using polyester resin and bentonite clay.
First of all I have to acknowledge that this mix was developed by Hrappur Magnusson (goes by the forum name "The Rap") and I got a bit of information from the audio qualia forum and I used a template from lenco heaven, which I altered a bit to suite.
The mix has very good dampening properties, but that could depend on the mix and materials. In the small sample range a Isophthalic polyester resin gave a better result. I just used the basic Orthophthalic polyester resin you can buy easily and cheaply.
The mix is roughly 60/40-65/35 bentonite/resin, 1% catalyst. Will depend a bit on weather. Mix the resin and catalyst first (I do it in 2 kg lots) and then add the bentonite, then pour into the mould. if you start with 60/40 you can add more Bentonite into the mould until you only have a paper thin layer of resin on top. The bentonite will sink. Takes about an hour to go off (obviously depending on weather). Allow for a little shrinkage. (mine shrunk about 1mm over all).
Oh and Bentonite clay is used for kitty litter.
Enough with technickle dribble, now to my progect. I originally made a 1" thick table top plinth for my old Orpheus turntable, that worked really well (well the second time around, first one was a failure, the resin stuck to the mould). This time I bought a Lenco L78 deck only and decided to make something a little more challenging than a basic table top with a hole for a tt.
The L78 arrived and it was in such good order that I decided not to cut it up, also purchased a original tonearm I'm in the process of restoring. The deck will be all original with auto stop function.
Im going to counter sink the deck, add a bevel face and sides, try and hide the wiring, add a on light, use squash balls in the feet, use a coloured epxy top coat and try not to muck it up.
For the mould I made the sides from pine and base and plug from MDF, cutting using a template, then redoing a bit of it to suite mine. Not a good idea using MDF for the plug as you will find out later, but it was cheap and plentiful. Need to remember to do everything in mirror reverse....oops. Painted everything with PVA mould release that put a thin pv layer on every thing to stop sticking.
more to come......
Thought I would share my latest plinth build using polyester resin and bentonite clay.
First of all I have to acknowledge that this mix was developed by Hrappur Magnusson (goes by the forum name "The Rap") and I got a bit of information from the audio qualia forum and I used a template from lenco heaven, which I altered a bit to suite.
The mix has very good dampening properties, but that could depend on the mix and materials. In the small sample range a Isophthalic polyester resin gave a better result. I just used the basic Orthophthalic polyester resin you can buy easily and cheaply.
The mix is roughly 60/40-65/35 bentonite/resin, 1% catalyst. Will depend a bit on weather. Mix the resin and catalyst first (I do it in 2 kg lots) and then add the bentonite, then pour into the mould. if you start with 60/40 you can add more Bentonite into the mould until you only have a paper thin layer of resin on top. The bentonite will sink. Takes about an hour to go off (obviously depending on weather). Allow for a little shrinkage. (mine shrunk about 1mm over all).
Oh and Bentonite clay is used for kitty litter.
Enough with technickle dribble, now to my progect. I originally made a 1" thick table top plinth for my old Orpheus turntable, that worked really well (well the second time around, first one was a failure, the resin stuck to the mould). This time I bought a Lenco L78 deck only and decided to make something a little more challenging than a basic table top with a hole for a tt.
The L78 arrived and it was in such good order that I decided not to cut it up, also purchased a original tonearm I'm in the process of restoring. The deck will be all original with auto stop function.
Im going to counter sink the deck, add a bevel face and sides, try and hide the wiring, add a on light, use squash balls in the feet, use a coloured epxy top coat and try not to muck it up.
For the mould I made the sides from pine and base and plug from MDF, cutting using a template, then redoing a bit of it to suite mine. Not a good idea using MDF for the plug as you will find out later, but it was cheap and plentiful. Need to remember to do everything in mirror reverse....oops. Painted everything with PVA mould release that put a thin pv layer on every thing to stop sticking.
more to come......