FWIW...I made a pair of flat stainless sheets with 20mm aluminum dogs attached to secure both of my vacuum bases to the workbench. The stainless is maybe 16 gauge thick so when a vacuum is drawn, the stainless does move slightly which then secures each aluminum dog in the dog holes tighter...in other words, the stainless sheet moves which also moves the dogs and the dogs then grip the table.
The last 2 photos show the stainless plate in the normal direction on the bench and then turned
@Cheese after seeing your pictures, i did a bit of you-tubing ( well, sedgetools

) and made a modfied version of his.
I had ordered some longer dogs (40mm i think) a while back for a vacuum pod idea that i didnt like, and the T track items that fit the rail i had from a couple of years ago that i had not used at all.
This allows me to use it anywhere on the top of my bench, or the rails on the side.
I did have to reset my Rail brackets to make sure the new base fit and i can still access the systainers on the side , so yaa me
I ordered the VT sort kit from A mazon US, saved like $50 at the end of the day over buying them all individually here, and got a free systainer with insert.... thats when im telling myself

Stackry are a little BS on the way they portray the freight by using their 'calculator', just when you actually go to pay, the same weight and size now costs and extra $50, and then they hit you with GST on top of everything ( ^%$# Gerry Harvey, poor rich Australian. Google his name and GST if your bored one day) followed by what i assume is a %1 credit card charge after you click paynow, bah humbug!
Oh, and I ordered some prevost fittings too, so i can setup disconect points on both hoses.
G 3/8 threadded euro fittings for the base and pedal, a euro hose barb for under the vac pad and thought id try the prevost euro quick release fitting on an end, as im one short for doing both ends of both hoses and its not close to $200aud.
Worst case i still need to order a festool Val fitting, worst worse case is my wife walks into my shed and then has questions
