most sieving for larger quantities in Germany and other countries in Europe I know is done by heating honey. Most common a sieve in form of a cloth and a heating spiral sitting on that cloth. What i dont like about it is that the honey is - for a very short time - heated to up to 80 C. but it is clean after this process and it is commonly accepted that the honey does not suffer, says science. I see that a bit differently.
So I am planning on building a run-throuhg-warmer, where the honey is led through a stainless-steel-tube which is spiraled in a large pot of warm water. If I heat the water to a defined temperature - for the honey we sell directly we will not exceed 35 degrees, in very hard cases 42 - the honey cannot get warmer than that, cause it doesnt have direct contact to a heating element.
Before that I plan on sieving through a coarse mesh (the extractor will get a heater-element underneath set to maybe 35 degrees, too, then pour or pump it into a large tank which will be kept at lets say 30 degrees overnight. then let it run through the warmer and into a large fine nylon sieve which sits in another smaller tank. from this tank I can then fill the buckets or barrels and after letting that sit for another few days, skimming a little should do the job. Maybe I can let the skimming be even.