SR540/SR800 Glass Extension Tube

Pros: The unit itself, once assembled, feels solid. Its about the same thickness as a drinking glass, but not as thick or durable as say a pint glass. Everything you’ve already read about it is is correct. It drastically increases not only air flow, but the temperature control. The roasts appear to come out “more even” perhaps due to the increased movement. Overall the unit increases temperature, movement and control. It feels exactly like getting an upgraded roaster version from the same company, a version “tube.0” if you will? Larger batch size is possible, although you may need a chaff collector tweak. Cons: Its expensive for what it is. It is a “clunky” non-elegant solution, especially the way it fits into the other chamber. The product is top heavy and just assembling the parts in preparation to roast induces anxiety. Removing a rocket hot chaff collector at the end of the roast….doubles that anxiety. Although everything is available online these days, there were no assembly instructions or links in the packaging I received. Once assembled it no longer fits into the box it came in, so you will need to find another way to store it. As others have said this absolutely should be standard equipment for the FreshRoast(s). It should also include some kind of port for a bean probe(s). Conclusion:If your beans aren’t moving at the start of your roast, you could absolutely benefit from the extension tube. If you have uneven roasts you may benefit. If you have ham hands, are inherently clumsy or can’t sleep at night when things are “jury rigged” together, you might want to look elsewhere for another solution.

This makes such a difference, It should be standard equipment not a upgrade.

This extension tube works great it allows the coffee beans to rotate and allows a more even roast.

This extension tube dramatically improved the ability to roast specialty coffee.

This tube is a little pricey. But, it allows A LOT more control over the SR800 roast. I have only roasted 1/2 lb batches so far. But, I can see maybe 3/4 lb roasts for sure. Very pleased with this add to my equipment.

Very worthwhile upgrade! Better bean movement resulting in a better roast no comparison! The first one arrived broken and I dreaded the process ahead of me to get a replacement but I was quite surprised at how easy that process went! Excellent customer service!!

First one arrived in 1000 pieces. Poorly packed. Replacement arrived and it was a great add! CBC service was outstanding in replacement. Sad that tube isn’t shipped in a styrofoam case. But, all is well now and the tube really makes roast control easy. Very pleased, overall!

If you have an SR800 Freshroast you MUST get the extension. What a difference it makes. It cut the roast time 75% and increased the control tremendously. Because of my electric company's inadequate power, it used to take 20+ minutes to get a nice Vienna roast, and the result was a rather "baked" tasting product. Now I can bring up the roast to first crack within a few minutes, then back off the heat to bring the roast up to the precise shade and surface texture in less than 7 minutes. The roast is much more uniform, and the chaff separated off more efficiently. It used to take hours to roast a weeks supply of beans, and now it is done in minutes. The ability to roast at much lower fan speed and temp also makes it much easier to hear the "cracks". As I said before, this extension is a "must". I wish Freshroast would just go ahead and make a tall roast chamber and save us the extra 80$!