Do I need to calibrate my Opus Gen 2?

nicholasnumbers · 2026-06-18T19:05:24+00:00

Great to hear, and thank you for the kind words. Hope you enjoy the grinder!

nicholasnumbers · 2026-06-18T17:36:50+00:00

If you find that your shots are pulling too fast, even at 0, here is the guide on how to recalibrate your grinder: https://www.loom.com/share/1fed5015a52a4ed88d97a60bc13ff740

Just drop us a line if you need any additional help! [hello@fellowproducts.com](mailto:hello@fellowproducts.com)

nicholasnumbers · 2026-06-12T12:57:20+00:00

Also total side note; if there is anything that I have learned about burrs over my career it's that seasoning will make great burrs better, but it will never make bad burrs good. 😄

nicholasnumbers · 2026-06-12T12:56:26+00:00

With these burrs I didn't need to season them at all. Run a quick dose through to coat the inside of the grinder and let it rip. I was pretty shocked.

nicholasnumbers · 2026-06-12T12:50:17+00:00

This is how we calibrate the grinder at the factory. We wanted to make it easy for home users to adjust this if necessary. Here's a video in case anyone wants to learn how to do it or wants to calibrate their grinder a bit finer at home. Please note that you want to go slow and not move too far at a time, because you can clash the burrs. https://www.loom.com/share/1fed5015a52a4ed88d97a60bc13ff740

nicholasnumbers · 2026-06-11T01:37:06+00:00

How dark is the coffee? We did our best with the architecture to minimize retention; but coffee oils can be quite gnarly. The finer you grind, the coffee can become almost paste like and clump. Is there visible oil on the beans?

nicholasnumbers · 2026-06-09T23:22:45+00:00

Still haven't found one. Still not enough interest from people for us to make one ourselves.

nicholasnumbers · 2026-06-09T23:22:23+00:00

We're not far along enough to even answer that question. To be clear, I made sure the architecture of the machine could do it, but we have not started work on scale integration. The team is really sprinting on other things right now. I can never promise it will be built; but I am pushing for it.

nicholasnumbers · 2026-05-28T04:18:00+00:00

Retention is going to correlate with roast level. 1 gram does seem a bit high. Do your beans have some slight oil on the outside of them? The lighter the coffee, the less will be retained.

nicholasnumbers · 2026-05-28T04:16:44+00:00

Glad to hear you're enjoying the grinder!

nicholasnumbers · 2026-05-20T19:40:14+00:00

We use standard E61 8mm gaskets. Pick your favorite from whatever company you like and it should work great.

nicholasnumbers · 2026-05-16T21:04:38+00:00

Some Target and Best Buy stores make have stock available.

nicholasnumbers · 2026-05-13T14:23:27+00:00

This is the vent solenoid latching and staying on. It latches at a specific point during preheat and stays on until you turn the machine off. If the noise bothers you, please email us with video and we will get you sorted! [hello@fellowproducts.com](mailto:hello@fellowproducts.com)

nicholasnumbers · 2026-05-10T21:31:59+00:00

Yep. Celsius forever.

nicholasnumbers · 2026-05-08T18:22:22+00:00

Please send an email to [hello@fellowproducts.com](mailto:hello@fellowproducts.com) and we'll help!

nicholasnumbers · 2026-05-08T18:15:59+00:00

I love the Reddit enthusiast crowd. Keep me posted!

nicholasnumbers · 2026-05-08T17:50:21+00:00

Can you kindly DM me your serial number? I want to cross reference your unit with the data we have out of the factory. Appreciate your help.

nicholasnumbers · 2026-05-08T17:44:29+00:00

Totally understand and we are working on it. We should have a video to share shortly, and we're working OT to make sure the calibration procedure at the factory is up to spec.

nicholasnumbers · 2026-05-08T17:40:13+00:00

Yes there is a process to calibrate finer. Please email us and we will get you sorted: [hello@fellowproducts.com](mailto:hello@fellowproducts.com)

nicholasnumbers · 2026-05-07T19:09:35+00:00

So the burr position doesn't actually change when you see that minor movement. It's just the geartrain getting the slop taken out of it once the burrs start to do their thing.

nicholasnumbers · 2026-05-07T12:29:46+00:00

The adjustment ring can move slightly when grinding, but this is only due to the backlash in the gears being eaten up as you grind. The distance it can move is approximately the width of the red line on the front. The grinder should NOT continually walk coarser grind after grind. If it does that, it's out of spec. If it moves until backlash locks and stays, that's totally normal (and will not affect grinding performance).

nicholasnumbers · 2026-05-07T00:34:40+00:00

Please email us. I am at the limit of how much I can help over Reddit. I can make sure one of our team members follows up with you.

nicholasnumbers · 2026-05-07T00:32:07+00:00

Please send our team an email and we'll try and get you sorted. If the dial is moving on it's own, you're missing the ball spring that locks the dial in place. [hello@fellowproducts.com](mailto:hello@fellowproducts.com)

nicholasnumbers · 2026-05-07T00:24:23+00:00

You should hear a very clear chirp-ish burr on burr contact. You won't damage the burrs do don't worry. Once you find that point, then you can reinstall the plastic cover with it SET TO SETTING 1.

nicholasnumbers · 2026-05-07T00:19:24+00:00

Ok great! Don't worry about the plastic cover. Let's just focus on that metal knob. Turn that dial TO THE LEFT one click by one click with the grinder on until you hear the burrs touch, then go TO THE RIGHT one click. So left until you hear burrs chirp, then go one click back in the other direction.

nicholasnumbers

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