OK, built the bottle washer!
Seriously amazing to put 20 bottles on and rinse with little more effort than turning the hot water tap on... Haven't built the keg washer yet or gotten a pump. That's next.
The bottle washer was designed with the riser spacing to go through the holes in the bottom of the Hacker Pschoor crates. The aim is to slide a full crate over the top of the washer, hit go, pull the crate off and presto - washed and dried in the crate. Of course... the risers aren't that rigid and I didn't drill the holes all that straight, so it is virtually impossible to get all 20 risers through all 20 holes for the moment. Next Steps: find some small gauge stainless tube and drill the cross members in the drill press. Hopefully then the 'in-crate' washing magic will work....
The larger ring around the outside equalises the pressure so all risers get the same amount of flow/pressure. The outside ring is 3/4"/20mm, the inside cross-members are 1/2"/15mm. The risers are rigid irrigation risers. Everything is press-fit together; no glue. No leaks when using mains pressure so it is likely to stay that way. Without bottles on the washer the hot water tap will give about 15cm of 'fountain'. On cold water on the garden tap, around 2M-3M of height, completely even. At low pressure some of the risers are slightly uneven lower - I think I might have pushed them in slightly further.
The washer is running here, though it is hard to tell from the photo. The water flows over the cross member and straight into the sink. No mess, no fuss.
The T pieces are 3/4"/20mm, with a push-in reducing bush for the 15mm cross-members.
The risers are 20cm poly irrigation risers. 7.2mm OD appx / 2.5mm ID appx. I couldn't get a neat hole drilling into the PVC using the 7mm drill on the test piece (the drill bit kept wandering off the pipe into my fingers), so drilled pilot holes with a dremel on high speed @ 3mm. Worked a treat. The 7mm hole was then easy. The pressure fit works brilliantly.
Parts List:
Masters was cheaper by around 50c / $1 on each pressure pipe fitting, which adds up quick.
10x 1.49
https://www.masters.com.au/product/900004837/hr-products-pvc-tee-20mm
10x 0.80
https://www.masters.com.au/product/900004845/reducer-bush-connector-20x15mm
4x 1.05
https://www.masters.com.au/product/900004863/hr-products-elbow-pvc-joint-90-degrees-x-20mm
2x 2.10
https://www.masters.com.au/product/100229013/pipemaster-pressure-pipe-15mm-1m
1x 2.40
https://www.masters.com.au/product/100229021/plascorp-pressure-pipe-20mmx1m
1 x 1.65
https://www.masters.com.au/product/900004843/dura-faucet-tee-pvc-20mm
1x 1.65
https://www.masters.com.au/product/900004672/hansen-reducing-poly-bush-20x15mm
20x 0.50 - rigid riser 200mm. I got mine from an irrigation store - so you will need to measure what you get. You can see the brand above. The OD was 7.2mm appx - hole was 7mm. Worked really well.
https://www.masters.com.au/product/100911565/hr-rigid-riser-200mm if you want to get it all from the same store.
1x 1/2" stainless barb - from brew kit.
1x 1/2" silicon hose - from brew kit.
Total: $37.10
Of course... I spent more on other parts because I was thinking of building more than one (one to fit a 25 bottle batch of 330ml bottles in a milk crate... slide into the 5x5 grid of bottles, invert the crate, wash. I'm not convinced this is as good as you will still need to rack to the bottle tree to dry). I'll see if I can get this one to work with the Hacker Pschoor crates before I do that, but I will say - 20x 330ml bottles worked a treat on the current one which is making another unlikely (more likely to build another the same... run one for recirculating washing fluid, another for rinsing from tap).
Worth the money? - absolutely! If you are bottling... just build one. So easy and so satisfying.
Spacings if you are interested in the layout I used:
- 19mm Joiners between T pieces - 43mm (and between elbows) x12
- 19mm end cross member - 300mm x1
- 19mm end cross member to faucet T - 135mm from memory ( (300-30)/2 ) x2
- 15mm cross members - just under 300mm - I cut these so they 'just' fit the bottom lip of a Hacker Pschoor crate between the insides of the T pieces. x 5
Total time building... 3hrs? I lost my plans with measurements I had drawn up, so included a lot of messing around. I cut all the pieces with a stainless cut-off disc on the angle grinder which worked really well, but I didn't cut straight most of the time. As long as the largest width of each piece is the same length (mostly 43mm), that isn't really an issue. I had to re-do two of the spacers between T's because the spacings didn't match the crates the first time. Otherwise it is super simple to put together.