Try a search "UG Stand" and it will bring back several results with different mods -- a place for a CT and casters, imperial tape, cutting longer stock than 2400mm, etc...
I have modified my UG stand to allow a CT MIDI to sit below the KAPEX saw. Also I designed a castor set that permits easy movement of the KAPEX UG setup. This setup does not require any holes to be drilled into the UG stand whatsoever. Thus the integrity of the UG stand is maintained. I did these modifications for these reasons: To be able to move the KAPEX UG setup about without a tipping hazard, a place for storing a CT MIDI dust collector that is dedicated to the KAPEX and the ultimate convenience of compactness that my humble sized shop dictates. I am very pleased with the performance of these improvements and believe they enhance the KAPEX UG setups value and utility. Here are some pictures:
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Picture of the KAPEX on the modified stand with the CT MIDI below the saw.
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Picture of the plate that the CT MIDI sits on below the saw.
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Picture of the cantilevered castor mounting plate which mounts to the UG stand with standard Festool KAPEX hold downs.
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Bottom view of the castor plate.
If you have any further questions please let me know.