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Yep, get a tracksaw. And watch Peter Millard on YouTube for how to use it. e.g. https://www.youtube.com/watch?v=_8sagpnlF1Q
The MacAllister ones from Screwfix https://www.screwfix.com/p/mac-allister-msps1200-165mm-electric-plunge-saw-220-240v/274gf are extremely good for the money, and seem to be a rebadged version of the older Titan saw, as featured in Peter's videos. If that's the case then they are compatible with Makita and Festool track, should you want to buy longer lengths of rail.
yeah this is a fair point, i’m tempted to give it all a go myself however..
if all goes to plan, going to have a decent garage and 3 bedrooms that could all eventually do with some built in storage so tempted to try getting into DIY