I'm still little skeptical since the most unique part of the roaster, induction coil is not finished yet. That could derail whole project... I hope they deliver and roaster works well.

It seems like they have gotten the new heating coil, and therefore is ready. I myself have preordered, and I'm really looking forward to it, they just released a full 12 min video, and their newsletter. It looks promising for now.

Based on the last video, I'm now feeling pretty confident so I decided to take the plunge too.

I think it's cool, that they have made the file for the 3D printer, so we can make our own exhaust converter. As I have no clue, about how much it will smoke, I think it's good, taking that I live in an apartment.

There will be smoke and also a lot of residual smell. The amount of smoke is depending upon the amount of beans you roast, more or less regardless of the roaster type. Just try to roast say 200g of beans in your oven and take it into say Full City. That is 1/5 of what the Bullet can and will produce in terms of smoke. The more you charge the roaster, the more smoke you will get. With just about any type of roaster you need to lead the smoke either outside or into the vent system (if that system can handle it and not push the fumes/smells into the neighbours apartments). I roast on a Huky 500, with typically 400g charges and I have to vent the smoke with a 3" (75mm) aluminium hose out the window.

Hopefully, some folks will get their hands on the first units in December so we will know exactly how much smoke there will be. Until then, everything is just speculation.
The 3D printed adapter is an interesting option that I'd like to see in action as I wonder about the heat. Having said that, I'll probably figure out a way to just vent outside via my sliding glass door.

This is incredibly exciting. I plan on following this closely and hopefully making this my first roaster in another year or so. I've never had any interest in a gas roaster and all of the electric options on the market so far seem too limited. This could be huge.

RasmusDJ wrote:I think it's cool, that they have made the file for the 3D printer, so we can make our own exhaust converter. As I have no clue, about how much it will smoke, I think it's good, taking that I live in an apartment.

1. Well I've had a number of 1kg roasters (4), I have 2 at the moment and I can confidently tell you that 1kg of coffee roasted medium through to medium dark is going to produce a LOT of smoke...and I mean a LOT. Unless you got a cooking hood that will suck up a small child and throw it outside, you might find roasting 1kg in an apartment is not great fun.

2. Depending on how much you roast and if your considering buying this roaster then I assume a reasonable amount, after a while, the roaster will absolutely stink and I mean really stink. it's much more noticeable than say on a little roaster like the hottop for a few reasons. It's much bigger and more surface area to deliver the stink from. Some of the Hottops stick goes with it's filter when it's changed. The only 1kg roaster I've used that doesn't stink as much as the others is my CBR 1200 1kg Gene Cafe, because of the forced air through the hot end of the roaster...less deposits. However, that furry flock like deposit on the more traditional roaster, absolutely stinks. My 1kg traditional drum roaster smells not so good.

3. I wouldn't use this roaster to roast 1kg in an apartment (or in the house), no way (in fact i don't think I would use any of my big roasters in an apartment). I would use a little Gene Cafe, a Hottop, or a Quest M3 in an apartment, but not this one. If you get a roaster fire, the roaster needs to contain it well, the bullet is a lightweight construction? Things can also get hot pretty fast, the legs are plastic, how will they hold up? A 3d printed Vent attachment is plastic, how will that hold up?

The above is based on my knowledge and usage of every roaster mentioned with the exception of the Bullet, as it's not released.

DaveC wrote: I would use a little Gene Cafe, a Hottop, or a Quest M3 in an apartment,

The above is based on my knowledge and usage of every roaster mentioned with the exception of the Bullet, as it's not released.

My Quest is something that I cannot use in the house unless I have it under a "Throw small child hood" and even at that I think I am going to go toward a heated garage with a super vent.

I think your fears of this one might be well founded. A roaster fire is a real possibility with any roaster since chaff and oils from beans produce the perfect storm.

While i think it looks incredible, what would worry me the most about roasting is the hot/cold spots between coils. It looks like they have worked hard to minimize hot/cold spots and are showing a picture of a pretty impressive coil design on facebook. However, my experience with induction shows me that the actually heated band above the coil is quite narrow. For example, when boiling water, you can actually see the entire coil design in the boiling water, as the water boils directly over the coils, and the space between coils does not boil. Further, if the pot is larger than the coil it does not show boiling there because most of the metals used do not conduct heat efficiently enough.

Of course eventually the coils fade and the center becomes one boiling mass, as conduction allows the entire surface over the coil to heat up enough to boil water, but the area that extends beyond the coil does not get hot enough ever, in my experience. I suppose if the drum is moving constantly this might not be a major issue, but I would be very concerned that the actual surface area of the drum being heated at any given moment would be insufficient to offer fine control, and that in the end you would have a drum that is either underheated because so little surface is being heated that you cant gain sufficient heat during time in contact with the induction coils, or that you have to crank up the heat so high to get sufficient heat that you end up scorching or losing control of the beans. Maybe I am crazy though.

EDIT: Another way to put it, is that the heat source would be more of a pulsating heat, and that it would be passing over approx 24 pulsating spots (estimated from the coil picture online) providing the heat, rather than passing through a heated zone as one would get in a gas flame. Do those more knowledgeable than me expect that such a pulsating heat source would be able to offer sufficiently fine control?