Dry ice · sifting with dry ice
Dry ice at −108 °F (−78 °C) makes trichomes brittle in seconds. Material and ice in the bag, a few short passes, and the resin comes through the mesh as powder.
Work Bags from R$ 99.90 · ships anywhere in Brazil
On this page
The path explained start to finish and, right below it, the full guides — the same ones you open at the bench with wet hands. Click to jump straight to a part, or scroll and read it all in order.
What it is
Dry ice — solid CO₂, at −108 °F (−78 °C) — freezes trichomes in seconds and makes them brittle. Material and ice go together into a mesh bag; as you agitate, the resin comes through as powder. It's dry sifting with the cold taken to the extreme: very fast, very high yield, and a quality that depends on stopping at the right moment.
Who it's for
For anyone with volume — trim, sugar leaf, small flower — who wants to turn it into extract the same day, with no water and no drying. The result is great for pressing: 73u dry ice makes very good rosin.
The path in one image
Dry iceSolid CO₂, at −108 °F (−78 °C). Gloves, always.
The fog is CO₂As it warms it turns to gas, which sinks: work with ventilation.
The bag's meshThe micron size decides how much plant matter gets through.
Powdered resinThe frozen trichomes break and pass through the mesh.
How it's done
Thick gloves, a ventilated area, and a smooth, clean, dry surface to catch the powder. Dry ice burns skin in seconds and, as it sublimates, turns into CO₂ — which sinks and pools in an enclosed space.
TipBreak the dry ice into small pieces before you start. Big chunks tear material and mesh.
What goes in
Thermal gloves, tongs, and a bench outdoors or in a well-ventilated space.
The method is for dry material. Moisture freezes around the trichomes, clumps up on the mesh, and carries water into the powder. Pull out thick stems: they only take up space and puncture the bag.
TipSome time in the freezer beforehand helps: the material arrives cold and the dry ice goes further.
What goes in
Material and dry ice go into the bag together. Before agitating, leave the two in contact for 2 to 3 minutes: that's the time the extreme cold needs to make the trichomes brittle.
TipWrite down how many grams of ice for how many grams of material. The reference runs from 1:1 to 1:2 — and it's the variable that changes the result most between two runs.
On the 220u a lot comes out, and fast: it's the bulk pass, with more plant matter mixed in. On the 160u and the 73u the result is cleaner — that's where it pays to spend the time. Each pass lasts seconds, not minutes.
Tip20 to 60 seconds per pass. Long agitation breaks frozen leaf, and green gets into the powder faster than in any other method.
Gather the powder from each pass separately — by micron size and by order. The first pass on each mesh is the cleanest; mixing it with the ones that follow drags everything down.
TipLet the powder come back to room temperature before closing the jar: cold powder condenses moisture.
Airtight glass, cold and dark. Or straight to the press: dry ice from the fine meshes is an excellent input for rosin, and that's where this method shows what it's worth.
TipSet the 73u powder aside for pressing. The 220u works better as everyday material.
The path by the numbers
The same material changes category with the mesh: bulk on the coarsest, press material on the finest.
Volume — A lot comes out, and fast, with more plant matter mixed in.
Balance — Less volume, visibly cleaner powder.
Refining — The best of the method — and what's worth pressing.
Yield is the weight that comes out divided by the weight of the material that went in.
Yields more than dry sift because more gets through — plant matter included.
Typical reference range, not a promise: yield depends on the material, the genetics, and how the process is run. Each path has its own yardstick: you can't compare yields across processes.
Temperatures and times are starting points, not a recipe: adjust to your material and write down what changed.
What changes the result
Change two things in the same run and you won't know which one made the difference. Write down what changed: that's what turns a good run into a process you can repeat.
01
It's the fuel of the method. Too little ice doesn't freeze all the material; too much just dilutes the process.
too little ice · ↓ yield
02
The variable that changes the result most from one run to the next — and the one that slips from memory fastest from one week to the next.
the variable that matters most
03
A few extra seconds turn into broken leaf in the powder. Here, haste costs quality faster than on any other path.
↑ time · ↓ purity
04
The 220u delivers volume; the 160u and the 73u deliver cleanliness. The choice decides whether the powder is everyday material or press material.
↓ micron · ↑ purity
05
Each pass yields more and gets a little worse. Separating by pass preserves the best one.
↑ passes · ↑ yield · ↓ purity
06
Changes the force of the agitation and how consistently it repeats. Agitating by hand is the most variable of the three.
changes force and repetition
What 6 Stars makes for Dry Ice
Agitation bag, refining meshes, and what catches the powder.
Food-grade nylon, 220u.
Individual bags, in the micron size you choose.
From the collection tray to the vibrating sifter.
Common mistakes
Cold burns happen in seconds. Thick gloves, always — no “just a little piece”.
CO₂ sinks and pools. Outdoors, or with real ventilation.
It turns to gas and needs to escape. A closed container builds up pressure.
Frozen leaf breaks easily. A long pass is the fastest way to turn kief into green powder.
The moisture freezes, clumps up on the mesh, and ends up in the powder.
Without it, you can't repeat the good run or understand the bad one.
The path to 6★
Dry ice rarely reaches 6★ — and that isn't what it's for. It's the path of volume and speed. The best of the method is in short passes on a fine mesh, and it shows what it's worth once pressed: 73u dry ice makes seriously good rosin.
The 220u Work Bag is the agitation bag, the bulk one. For refining, the individual bags — Clássicas or Full Mesh — come in smaller micron sizes; the 18L Clássicas are listed on their own spec sheet as dry-ice compatible.
You can: it's the same food-grade nylon mesh. Just make sure they're completely dry first — any water freezes on contact with the dry ice and seals the mesh.
Dry ice is faster and yields more, with lower average quality. Dry sift is slower and more controllable, with a higher quality ceiling. Plenty of people use both: dry sift for the flower, dry ice for bulk trim.
The reference runs from 1:1 to 1:2 dry ice to material, by weight. Start in the middle and write it down: the right ratio varies with the material, and only the log shows which one is yours.
Guide 1 of 1Main guide
Quinze minutos do começo ao fim. A proporção de gelo seco, o tempo de cada passada, a ordem das bags — e o cuidado com a condensação que ninguém conta.
01
1:1 a 1:2
gelo seco : matéria, em peso
2 a 3 min
20 a 30 s
a melhor fração
30 a 60 s
cada, coletadas em separado
73u e 160u
para qualidade
220u
para volume
5 a 15 %
02
03
0 of 7 ready
04
Enrole o bloco em um pano e quebre com o martelo de borracha até ficar em pedaços do tamanho de uma noz. Pedaço grande bate na matéria e tritura folha; pedaço pequeno gela por igual e some rápido.
Matéria e gelo seco no balde, mexidos de leve, e a bag vestida na boca do balde. O frio extremo deixa o tricoma quebradiço na hora — e é por isso que o método é tão rápido.
Comece pela micragem mais fechada que você tem (73u): vire o balde com a bag para baixo e agite de 20 a 30 segundos sobre a superfície de coleta. Sai pouco e sai limpo. Junte com o cartão e guarde: é a melhor fração do run.
Repita em passadas de 30 a 60 segundos, coletando cada uma em separado. A cor conta a história: enquanto o pó sai dourado, continue; quando esverdear, a fração nobre acabou.
A mesma matéria passa para a 160u e, por último, para a 220u. Cada troca rende mais e entrega menos pureza — a 220u é a passada de volume, com bastante material vegetal junto. Bom destino para ela: a bag de rosin.
Este é o cuidado que ninguém conta. O pó sai muito abaixo de zero e puxa a umidade do ar como um copo gelado. Espalhe em camada fina, em sala seca, até todo resto de gelo sublimar e o pó voltar à temperatura ambiente. Pote fechado com pó gelado é condensação por dentro — e condensação vira mofo.
Pese cada fração, identifique micragem e passada e guarde em vidro vedado, no frio e no escuro.
05
06
Sintoma
Pó verde já na primeira passada
Sintoma
Pó empelotado e úmido
Sintoma
Mofo no pote dias depois
Sintoma
Bag furada
Sintoma
Rendimento alto e qualidade baixa
07
Dry ice rende mais que dry sift e, na média, entrega menos pureza: o choque térmico quebra folha junto com tricoma. Avalie cada passada em separado, com lupa e com calor.
08
Vidro vedado, frio e escuro, uma fração por pote. Como no dry sift, deixe o pote voltar à temperatura ambiente antes de abrir para não condensar água no pó.
09
Pouco. Ele sublima o tempo todo, mesmo dentro do isopor: compre para o dia do uso e calcule sobra. Guardar de um dia para o outro é perder boa parte do que comprou — e o recipiente nunca pode ser vedado.
As bags clássicas 6 Stars são indicadas também para gelo seco. A condição é estarem completamente secas: bag úmida congela na hora, a malha entope e o pó empelota.
Condensação. O pó sai muito abaixo de zero e puxa a umidade do ar como um copo gelado. Sala seca durante o trabalho e descanso em camada fina antes de fechar o pote resolvem.
Dá, e é o melhor destino para a maior parte do que o método entrega. As frações de 73u e 160u viram rosin limpo; a de 220u rende volume e pede bag de rosin mais fechada.
10
The five paths, side by side
Solvent, material, pace, and profile for each one. Yield is left out of the table on purpose: each path has its own yardstick.
Go straight to the store, or message 6 Stars on WhatsApp to pick the right model and size the kit. Ships anywhere in Brazil.
