My old pavoni was looking a bit worst for wear, needed a service and was having some pressure issues (bit like me really ;). After a new seal kit and some maintenance followed by tracking down a small bit of calcification on the pressure stat inlet tube and replacing the pressure stat (just for good measure) it was back to being like a brand new machine.
Hence a good time to take some photos of it. Although I gotta say I did not clean it that well, its amazing how little spots and dirt really stick out in these kinda of photos. Also shows up all those little bits of missing or chipped chrome…but hey thats ok, it is pretty old now and we all end up a bit chipped around the edges right…
These shots are taken using a lightpainting technique, rather than just use a static setup of flashes or light source. The light painting works which well since the light is very directional and dynamic allowing it to minimise reflections from the background, like my head and the kitchen bench. Basically i use a softbox with a torch inside and move it over the model during a long exposure, in this case about 20 or 30 seconds.
Thanks to Euroespresso (Caffe’ EuroBlend) and Vera Nadile for the new seal kit and pressure stat – the best place to get your spares and great coffee! Vera tell Marcello he was right about the blockage on the pressure stat tube. Its so good I can fix and replace any part on this machine, really great contrast to the throw away culture we seem to have found ourselves in…
So, this video is the conclusion of my recent project, well really a sub project. As part of the rebuild of my old La Pavoni Europiccola I thought while I have it all in bits I might as well 3D model all the bits, seemed like a good idea at the time, maybe a bit of a time waster, but it did serve two fairly key roles, 1) remind me how it all goes back together and 2) generate a bit more familiarity with the ever changing jugganaut that is PTC Creo (thats 3D modelling software).
I bought this old machine secondhand several years ago for a 400 bucks, there are many things I could say about this machine but besides making awesome coffee and being very portable, its best feature of all is; in a world of rampant consumerism and throwaway mentality its a little beacon of hope, there is pretty well nothing on this machine that cannot be repaired or replaced to bring it back to the original performance and function as the day it was unpacked.
This particular Europiccola is a 1998 model, which was probably the worst era for La Pavoni, it was the era they brought in a plastic piston and plastic boiler ring, they did learn and soon reverted back to tried and trusted items 🙂 thankfully my one already had the plastic piston replaced with a brass one, it did however have the plastic boiler ring, which for me, did not give me any problems ie no swivelling boilers etc. My machine also now has a few little after market mods now, a pressure gauge (thanks http://wilycafe.com/page7/page7.html) and now the brass bolier ring in place of the old plastic one. I will also try out one of those steam wand tips, the ones with a single hole rather than 3.
So back to the project, the main part being the rebuild and the reason for it was the gasket between the boiler and base had all but disappeared and not surprisingly some rust was developing at this point, also there was some minor surface rust on the inner surface of the base. Additionally the scale build-up was getting a bit hectic, even with fairly regular de-scales, the buildup on the lower side of the sight glass fitting and the pressure switch intake was growing. So several weeks back it all came apart and got cleaned and then slowly parts migrated from a box in the kitchen to my desk for a date with my vernier calipers and ruler from which were borne 3D parts in a virtual world – now note these parts and the models are good enough manufacturing, so in case La Pavoni ever stop making spares (or I am the only one left on the planet), which I highly doubt it, I can always knock up every part (with varying degrees of difficulty i suspect 🙂 ) I can also 3D print the entire assembly – this will happen soon I hope, thinking scaled down version for the kids 😉
So go on, check it on out, its even got colour and movement 🙂 check out how it even represents the correct mechanism of the lever handle, roller pins and piston. When you see the section view and the mechanism in operation you can see how the lever handle concept works – this is sooo much easier than trying to explain it. As a educational bend, remember the old days in the chemistry lab.. no not the bits where you tried to burn magnesium strips (yes that was cool) but the bits about ideal gas laws and those famous dudes Jacques Charles, Gay-Lussac and Avogadro (yeah hes the dude with the moles who gave me no end of pain in high school) look familar ? PV / T = C anyways before your eyes glaze over just remember as the pressure goes up, the temperature also goes up, and vice-versa simple huh. So as the boiler heats things up and then the pressure goes up, then you lift the piston up and then the steam/water enters the piston chamber where its then forced thru the coffee grinds under more pressure and yep you guess it 🙂 higher temperature 🙂
So there ya have it, forgive my crappy video skills, its the first screen grab video I have done, all in one take ’cause I got no idea how to edit videos.
and of course a little plug for my local La Pavoni Distributor, who not only supplies awesome machines (and parts) also has awesome coffee Euroespresso (Caffe’ EuroBlend).
Little E helping out finishing off a little project. Shes such a great little work companion, so happy to sit and watch, but ya gotta keep everything at arms length, shes got a mean grip on her and when shes got something she definitely does not like to let it go. We needed to have a little discussion about how vernier calipers are not appropriate for the under 6months olds 😉
A little sneak peak at what we were working on :). La Pavoni rebuild with a side project of 3D CAD modelling the whole thing…really, every little part 🙂
you don’t buy Italian designed/made things just to serve the purpose, its about the experience of getting there, that is why you buy them 🙂 Take for example Italian cars, its not about getting from A to B, its about doing it in a particular style and stopping at A(a) A(b) and A(c) before hitting B 🙂
Italian coffee machines are no different, its about the experience, not saying the taste is bad, it just takes a bit more to get there, the La Pavoni lever handle machines are a prime example, these are absolutely awesome little machines, really they are just a glorified kettle (pressurised) however when used in the right way can make coffee second to none, conversely, get it wrong and you will wonder what Italian god you cursed 🙂 If you want a coffee with no thought and no experience you do not buy one of these, these are for the tweakers, the ones who love a challenge and love the full unadulterated control over their coffee making process. For some like me we go even further, roasting the beans as well 🙂
I have owned a second hand La Pavoni for a long time now, its an old (well really quite young given they started making them in the 60’s) Europiccola (98 model) which I bought off a lady who received it as a gift but could never get a decent coffee out of it, I got it for a few hundred bucks, it was hardly used and has subsequently (and will continue to) served me well for over ten years. Another thing I love about these is the fact they have a parts catalogue which is better than some aircraft I have worked on… and.. this is the important bit, every part in the machine can be purchased, at a reasonable cost too.. every year or so i replace the seals in it and it just keeps chugging on.
Now as noted before, they are tweaky, with so many variables involved the potential to get something not quite right is very high, however with the basics (fresh beans and correct grind) covered you will just about always get something drinkable and when you get it all right simply awesome coffee.. once you have it setup, ie the right grind, regular fresh beans you will wonder how anyone can get it wrong 😉
