Help me choose a rosin press?

watts said:

DULYTEK DHP7 : https://dulytek.com/products/dulyte...-heat-press-for-cannabis-oil-extraction-7-ton

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Cabinet Ninja said:

I own and use the Dab Press bj6t35 and i cant see myself needing the 10t model. The 6 tones is more than enough for 7g presses at a time and works amazingly for bubblehash too.

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Ringodoggie said:

I spoke with the rep and he said the Strongway pump that fits the DabPress presses is discontinued. He suggested the best way to get everything compatible is to look at the list of compatible pumps on the DabPress web site. Click here and scroll down to see the pumps and where you can buy them in your country...

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p0opstlnksal0t said:

Crd.inc drip tech unit would be my vote for budget.

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EsterEssence said:

I have a 20 ton separate hand pump on my press and never get past 500-1000 psi or it blows out the screen or bags even the parchment so a large pump and ram are not necessary.

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Mr. Greengenes said:

I have a DIY 10 ton with gauge and 3x5 plates. So far, I've pressed 3-4 lbs of flower, all home grown wide range of genetics. I've noticed that the higher tonnages are needed when I'm pressing larger quantities. I suspect this is because the puck spreads out and the larger area requires more pressure. With bags, I'm only able to press 7-10g's at a time, but when I make my own wraps with double layer 90 cheesecloth I can do a full 28g's in one press. I pre mould the flower like a sushi rice shape (or dog turd!) and tie at one end with (unflavored) dental floss. It works better than the bags, but takes a bit of practice.

One of the reasons I switched to cheesecloth is that I think the bags are only achieving containment, and 'filtering' is not really needed, at least not on fresh intact flower. The cheesecloth allows better containment under more pressure. The result is more rosin out, and a basically dry puck on first run.

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watts said:

https://www.instagram.com/crd.inc/

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EsterEssence said:

I only press hash powder, or Kif at 180-220 at 500-1000 psi any more heat it starts cooking the terps any more pressure you get blowouts of the bag or screen...

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kalopatchkid said:

PSI is more relevant to the size of your plates than the strength of your pump.

I use a 10t press on 3x5 plates

A 10t press (20,000lbs) on 3x5 (15sq inches) = 1333psi max. I'm usually only pressing up to 6-8tons on the press which translates to 800-1066psi

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Mr. Greengenes said:

I have a DIY 10 ton with gauge and 3x5 plates. So far, I've pressed 3-4 lbs of flower, all home grown wide range of genetics. I've noticed that the higher tonnages are needed when I'm pressing larger quantities. I suspect this is because the puck spreads out and the larger area requires more pressure. With bags, I'm only able to press 7-10g's at a time, but when I make my own wraps with double layer 90 cheesecloth I can do a full 28g's in one press. I pre mould the flower like a sushi rice shape (or dog turd!) and tie at one end with (unflavored) dental floss. It works better than the bags, but takes a bit of practice.

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kalopatchkid said:

Using a pre-press mold helps a lot for preventing blowouts and pressing larger quantities at once. I normally do bout 20grams at a time and compress it under 1 ton into a nice little brick that slides right into a bag.
I almost never do second presses as the return is never very good and the rosin is darker and tastes not as good.

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Student Of Life said:

That was helpful, really cleared up my confusion on the pressure. How many g's are you pressing at that psi?


Are your pre-presses heated, or just with pressure?

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EsterEssence said:

My plates are 6”x5” with 2 pid heaters per plate. I was doing 100 gram pucks first pressed cold at 20 tons in the mold, I then press them at 100 degrees and use just the bag usually a food saver bag. I then remove the bag cut the puck in half, take the 50 gm puck wrap it in a coffee filter, then a piece of fine wire mesh, then a piece of ptfe film around the mesh leaving one end open for the rosin to flow from. I put it in the press at 180-220* and slowly begin to press the packet, flip the press on it’s side and slowly increase the pressure until the rosin starts dripping out, onto a frozen tile with a piece of parchment on it. I let it drip until the flow slows down. I don’t add any more heat or pressure, that rosin comes even darker and not as good. Unfortunately trim has become so popular that I only have my own this year which isn’t much so I may do some bags and not try to do the directional flow, with the large pucks...

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Would you be able to get more flower on the press if you pre-pressed like kalopatchkid recommends?

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kalopatchkid said:

No heat on the pre-press. Places like rosinevolution sell them to fit specific sizes of bags. You need the pre-press mold to be about 0.5 inch smaller than your bags to account for their final thickness, otherwise its real hard to get them in. IMO, a pre-press is a pretty important piece of a setup.

I usually press around 15-20g's at a time with a 10 ton press. My return is normally in the 15-20% range on flowers.

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EsterEssence said:

My plates are 6”x5” with 2 pid heaters per plate. I was doing 100 gram pucks first pressed cold at 20 tons in the mold, I then press them at 100 degrees and use just the bag usually a food saver bag. I then remove the bag cut the puck in half, take the 50 gm puck wrap it in a coffee filter, then a piece of fine wire mesh, then a piece of ptfe film around the mesh leaving one end open for the rosin to flow from. I put it in the press at 180-220* and slowly begin to press the packet, flip the press on it’s side and slowly increase the pressure until the rosin starts dripping out, onto a frozen tile with a piece of parchment on it. I let it drip until the flow slows down. I don’t add any more heat or pressure, that rosin comes even darker and not as good. Unfortunately trim has become so popular that I only have my own this year which isn’t much so I may do some bags and not try to do the directional flow, with the large pucks...

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Mr. Greengenes said:

Unless I read wrong, my 28 grams per press on 3x5 plates is more than kalopatchkid is getting? I thought he said 20 per press, which is about the limit I've seen elsewhere with bags on 3x5 plates.

I do 'pre-press' when I use the cheesecloth/dental floss wrap, I just do it with my hand (my grip is strong, I'm a competitive arm wrestler). I squeeze it into a sort of sushi rice ball, kind of elongated like a dog turd. Also, cheesecloth seems stronger and less prone to blowouts than the bags, so I'm often able to press the puck basically dry in one shot. But, that's just my experiences. Maybe I need more learning on the bags and how to use them right.

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kalopatchkid said:

You need the pre-press mold to be about 0.5 inch smaller than your bags to account for their final thickness, otherwise its real hard to get them in.

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EsterEssence said:

The press and the directional flow is in videos on YouTube by Sunfire. The press I have is the one in the videos. Sunfire made the plates and the press itself.

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