For even bending, use the hot sand method (videos on YouTube) and a fixture. Hot air gun may not give you the smooth curve you are looking for.
It doesn’t look like he’s using PVC. Might want to simply start with just hot water
For even bending, use the hot sand method (videos on YouTube) and a fixture. Hot air gun may not give you the smooth curve you are looking for.
Screwfix has opened in Sandyford and Swords. 40 of that 40mm wastepipe suggested earlier, in stock in Sandyford it says on the websiteOk. Ok course nothing is simple in the republic. No one appears to stock this product, but a little out of box thinking and the NI stores of course have stock. Road trip time I guess. B&Q appears to have the floplast push-fit 40mm white 3m length.
https://www.diy.com/departments/floplast-push-fit-waste-pipe-dia-40mm-white/152664_BQ.prd?rrec=true
Next we need to do some match on the length per arch and number of arches.
1st world issues.