One of the nice things about doing a blog like this is every now and then, you come across a really clever person who has designed or invented a clever new way of doing things.. this time its Ross Parkes, an all round clever bloke who after needing a spare part for his SOG system, decided he’d design and 3d print it !
From here, ho moved on to his Water Pig Its probably better that I let Ross tell this in his own words as when you hear the background, its an interesting story…
Take it away Ross 🙂
The Water Pigs, it all started when the fan motor on our SOG started failing and I enquired as to the cost a replacement – some $162 – yikes so instead I looked into the practicality of making a replacement fan assembly using a standard 50mm computer type axial fan.
During that investigation I considered that 3D printing a fan unit might be fun so purchased an Ender 3 v2 printer. Spent a day setting it up and then designed and made the fan housings (pic below) and experimented with different fans until I found one that worked ok – a whole nother story…
After that I played around and made some other SOG parts such as the bayonet fitting that goes in the top of the cassette – really to get around the design issue with the factory fitting in that it allows liquid to get down the pipe to the motor if too much slosh going on. It also meant we could have a fitting on our spare cassette all ready to go when we do a swap and also played around printing our new house which is yet to be completed
At that point I had become fairly competent designing and driving the printer so started thinking what else could I make and the water filler attachment that we use on our van came to mind. Like many people I have something I made from bits and bobs that you can connect the hose to so as to not have to hold it when filling with water. (pic below) A bit of a consideration if you have larger tanks or if you are on your own.
And so was born the first “Water Pig” or “Poaka Wai” (pic above) which fitted the Fiamma brand fitting on our Traillite and out of interest I posted it on a couple of Facebook groups, “hey look what I made” and then had a flurry of people also wanting one but of course they were not all Fiamma…
So on with the R&D hat again and came up with 8 different piggy designs, some of which I am still refining. It would not have been possible without the help of quite a few people out there who volunteered to be guinea pigs for the water pigs. There are still a few tweaks that I need to do to perfect some of them and I have quite a lot of “seconds” that I sell off for not very much, well actually, I sell the good ones for not very much as well 😉 It is important to note that there are “commercial” water filler fittings available on Amazon/Ebay for various filler types but these are quite expensive and from off shore sources.
The process of printing the pigs is not quick with each taking 5-7 hours depending on the size. (pics below – A piggy for Rafe) I could print them quicker but they would not be as pretty and probably not as strong.
Sometimes things go wrong (pic below) so the printer does need to be monitored during the initial stages to ensure adhesion to the build plate is good and also if I have messed with a design I sometimes get it wrong and create some mutant pig…
Anyway, its been good for my brain developing the eight little pigs (so far) and hopefully is helping some people out by making dump station stops more efficient and easier due to not having to hold the hose….
In summary.. I’ve tried it on Rafe’s water filler (I had to wash it first before I could photograph it !) and it works really well..
For those looking for one, Ross is an administrator of the Facebook group RV Happy Travellers. You can contact him here