Operationally this thing is messy, the "splash radius" is about 8 ft and your wife will NOT be happy if you get beer on her kitchen ceiling. I finally started back from scratch and was able to pinpoint the final adjustment. I had 3 occurrences in the 1st 30/40 cans where the height became unadjusted and either crushed a can or mis aligned a lid. They should also tell you to use water or beer you don't care about while getting it dialed in They should include at least a dozen cans for initial setup/tuning of the plates. Why it does not come with the power supply is confusing, and the additional cost is annoying. While I've only had 2 weeks, here are Cons and Pros. My interest in this was to better distribute my liquid creations to family and friends and not rely on just kegs and growlers or have cases of bottles everywhere. I received the Cannular as a B-day gift from my family. Imagine being able to get any kind of 202 can and seam it up! That would be a gamechanger and I'd happily come back and give it the 5 stars it deserves at that point. Basically, if they were to make a spacer for American 16oz pint cans (202 lids) this thing would be an absolute steal. We were able to jury-rig the base platform to raise up just enough to get them to seal but that's not the most elegant solution. The base is adjustable, just not far enough to make it work. The standard spacer is a hair too short for 16oz pint cans. In the US we'd interpret that as working with standard US-style 16oz pint 202 lid cans, right? Well, that's not the case. Even the product description is misleading saying "we've tested it with standard 202 style cans and achieved good seals with some adjustments". Despite that they sell it as compatible with all 202 cans. That means you're locked into their cans.
Here's my main issue (and, by the way, if they sort this out, I'll come back and give a full five stars): it's built in Australia so it's really meant to work with European sized cans, 500ml and 200ml. Took me a few hours to get it set up, but now it's seaming well. Aside from all the "sciency stuff", cans are just plain safer. Take your beer backpacking, camping, or poolside and rest assured that broken glass won't ruin your day!
Of course, it's important to make sure that the can is purged of oxygen before being filled, and that the can lid is sealed atop foam to eliminate oxygen from the headspace. Seamed cans, on the other hand, form a much better seal that can prevent these issues.
Over time this can result in oxidation of the beer and lost carbonation. When a crown cap is crimped onto a bottle, the lining of the cap can form an imperfect seal on the bottle, allowing small amounts of oxygen in, as well as small amounts of CO2 out. There's still great debate surrounding whether cans or bottles are better at keeping beer fresh, but if done correctly, cans are theoretically the superior option. Whereas bottles allow in light, which leads to skunking, aluminum cans offer 100% protection from UV and other wavelengths of light that are harmful to beer. Aluminum cans aren't just more environmentally friendly than bottles, since cans require less energy to transport and recycle, they're also much better at protecting the quality of the beer. So why can when you can bottle? There's no doubt that canning has become a more and more popular format for packaging beer among craft breweries over the last several years, and with good reason.