ViperONE Automatic Pretreater Early REVIEW!

ViperONE Automatic Pretreat Machine


Pretreat Quality




Build Quality




Cost of Ownership



  • Fast and easy pretreatment
  • Little skill required
  • Simple adjustment controls
  • Inexpensive replacement parts
  • Controlled use of consumables


  • Expensive purchase price
  • Limited space for bulkier garments
  • Moderate build quality
  • Constant maintenance
  • Flaw with Start button (do not hold for extended period)

DTG Print Solutions is pleased to have been given the opportunity to become an early BETA tester for the ViperONE automatic pretreatment machine, which is being delivered to the market by i-Group Technologies, LLC (the same team that brought out the original Viper automatic pretreatment machine).  For many years, our sister company Fusion Logistics Group has gotten by with the traditional Wagner HPLV sprayer for manual pre-treatment application – the results were not always perfect, but the process has become far more forgiving and manageable in recent years.  Printing thousands upon thousands of shirts has made our staff incredibly knowledgeable regarding the manual application of pre-treatment, and we have come to accept this as a normal part of the DTG printing process.  Although we have indeed tested other automatic pre-preatment machines in the past (including one which sat dormant in our shop for over a year before we got rid of it), none have ever delivered upon our expectations of reliability, consistency and quality.  That all may have changed, however, with the introduction of the new ViperONE pre-treatment unit.


Our staff was eagerly anticipating the arrival of the new ViperONE pre-treatment machine, long before it actually arrived – since we got our hands on a very early concept model, we had to be patient while the necessary adjustments were made by the manufacturers; we were kept informed during the entire process, and when our delivery date came it was like an early Christmas.  At some point in the mid-afternoon, I received a call from my production manager to inform me that the pre-treatment machine had arrived – he asked me what I thought we should do with it, and my response was “Well if you feel so inclined, feel free to set it up and take a look at it – otherwise I will be in the shop in a few hours”…  Imagine my surprise when the response from the other end of the phone was “Phew, thank goodness – I already unpacked it 20 minutes ago and have been pre-treating shirts with it!”

This anecdote speaks to the ease at which my staff was able to unload the unit (which, by the way, is incredibly compact), set it up and begin implementing it into our production process; although they were in the early evaluation stages, they had no trouble getting it ready to go with almost no direct guidance or instruction.  Ease of use is an incredibly crucial factor these days, especially if you plan to utilize paid employees to do your bidding while you’re in Vegas blowing all your earnings on Blackjack…

As mentioned, the unit is physically compact and occupies a much smaller space than the original Viper pre-treatment machine.  This makes it easy to integrate into a small production area, where space is a valuable commodity.  Our initial feeling was that there could have been a little more money put into some of the construction materials used to build the unit – in particular, we felt the slide rails were not as sturdy as we were used to seeing on other equipment.  We discussed our feedback with the manufacturer, but the feeling seems to be that any improvements in this area would add quite a bit to the manufacturing costs – since we do not build or source the parts, we will have to take their word on that!

The machine utilizes a drawer-style design which involves the main body of the unit (where the actual drawer is), an upper spray mechanism and an assortment of tanks / bottles to dispense and recollect the pre-treatment spray; the machine also requires a small air compressor unit to operate (not included), which is a departure from the original Viper design (which utilized electronically controlled spray nozzles, rather than pressure nozzles).  To be completely honest, we were unsure how well the single-nozzle design would work out, considering we have never seen a single-nozzle unit that performed to our specifications – now that we have had some time to fully evaluate the system, we are pleased with the consistent and smooth results we have been able to achieve thus far.  Although we notice that the outside edges seem to vary from the center of the spray area, slightly, our experience has shown that this subtle discrepancy has almost no effect on the quality of the prints we are getting on our Neoflex printers.  The improved quality and repeat-ability we are able to achieve now in our pre-treatment department has surpassed even our most optimistic expectations, and our printing business has been positively impacted by this change – any slight difference in spray volume seems unnoticeable in the printed image, as the improved quality we are now getting far outweighs any concerns we may have had.


Our employees had little difficulty setting up the machine and pre-treating the first couple of shirts – in addition, Brian Walker was kind enough to provide some thorough documentation, including a user guide that helped indicate how much fluid should be applied to get the best results.  When dialing in the machine, there is a knob which you turn either direction to increase or decrease the amount of air flow, thereby affecting the volume of pre-treatment that is ultimately applied; we found that it can be a little tricky to determine the “zero point” for the dial, due to the fact there is no hard-stop when turning the dial counterclockwise.  A trick we were shown is to rotate the dial until we felt resistance, at which point it was at the “zero point” – from there, each full rotation would increase the spray volume incrementally.  This process is fairly simple, although it does not eliminate the need for someone who truly understands the pre-treatment process to be available during production, in case something needs to be dialed in again – since most brands / styles / colors require varying levels of pre-treatment to be applied, the machine would need to be re-adjusted on a fairly frequent basis.

Once the machine is dialed in for a particular garment style or color, it becomes a simple process to just load the shirt, close the drawer and press the “GO” button – in fact, you could almost hire anyone to perform this step over and over again, as long as the person who was actually dialing in the machine knew what they were doing (I would not leave that step to just any random employee, since it will ultimately determine the quality of the prints you will be getting).  Before I had even arrived at the shop to inspect the unit, my production manager had already set up the machine, dialed it in and had several employees pretreat some shirts to test it out – the only issue that came up involved one particular employee holding the green “GO” button for an extended period of time, which apparently causes the spray nozzle to get stuck in the back position with the spray coming out full steam ahead…  The solution, I am told, is to make sure your employees do not hold the green “GO” button for an extended period of time!  Makes sense to me, and we have not had that issue since we became aware of it.


The price range of the ViperONE pre-treatment machine is projected to fall between $3,500-$4,000 – while this may seem rather steep for a secondary piece of equipment, many shops will find the added consistency and quality to be well worth the investment.  After thoroughly discussing the price issue with my production manager, we are in agreement that although it seems expensive when you look at the fundamental construction of the machine, the value that it provides our business far exceeds that number and it is well worth the investment, regardless of the build cost – this is an example of a product being worth “well more than the sum total of it’s parts”.  As many people who are running their own DTG print shops will tell you, the stress and frustration (not to mention wasted prints and resources) of the manual pre-treatment process, while completely manageable if you put your mind to it and monitor the process closely, is one of the biggest hurdles that stands between them and long term success; if you could remove the headache and stress that this step causes, and ensure that a full run of 100+ dark garments will print the same from the first to the last garment, would that be worth the price tag to your business?  For us, the answer is yes.


An automatic pre-treatment machine is not the first thing a startup DTG print shop should be looking into – before you begin to automate this process, you should become an expert by manually applying pre-treatment to hundreds if not thousands of shirts.  Without this thorough and fundamental understanding of the way pre-treatment works and what affects the ultimate quality of the print, you will always struggle to make the process work effectively.  Additionally, if you are only printing a few dark garments per day, the time and effort involved with setting up the machine and subsequently flushing it out when you are done is simply not worth it; due to the nature of the pre-treatment chemicals used by most DTG ink manufacturers, it is not recommended that you leave anything sitting in the machine overnight.

If you are printing 30+ dark garments per day and feel that you have a decent understanding of the pre-treatment process, you might consider adding an automatic pre-treatment machine to your arsenal – the ViperONE has proven to be a great choice and is allowing us greater confidence in our process from start to finish.  Each garment is loaded onto the “platen” and the drawer is manually closed – once you are ready to spray, you simply press the green “GO” button and the nozzle travels across the garment to apply the pre-treatment; the entire process only takes a few seconds, so it is easy to pre-treat 60 shirts per hour without breaking a sweat.  If someone were to really hustle on the machine, I wouldn’t be surprised to see 120+ shirts per hour being pre-treated with little difficulty.

Rather than spraying the shirt once, we have found that we get better fluid deposit on the garment when we lower the volume down and press the “GO” button twice, instead of once; we subscribe to the professional painting philosophy that “two light coats are always better than one heavy coat”.  By laying down two light passes instead of one, we seem to get smoother pre-treatment results with more consistent fabric penetration – this is especially important when printing on porous cotton (such as standard vs. ring spun), or fleece materials.  Additionally, we have not eliminated the “brushing” step that precedes the heat press – after we spray each garment, we quickly brush it down with a high quality Wooster brush, to ensure that fibrillation is minimized.

At the end of the day, we are very happy with the ViperONE automatic pretreater, and our thanks go out to the team at i-Group Technologies, LLC!  This device may even allow us to begin offering “pre-pretreated” shirts to some of our local DTG customers, providing them even greater control of their own printing process while they build up the necessary volume to justify the purchase of an automatic machine – we believe the difference in print quality and consistency speaks for itself.  As i-Group Technologies, LLC makes this product commercially available, watch for it to appear on one of our product pages for you to purchase for your own DTG print business!  Remember, if it doesn’t work for us in our own production facility (, we won’t recommend it!

449 thoughts on “ViperONE Automatic Pretreater Early REVIEW!

    1. , there are a few reasons to be lokinog at this stuff in the past, the answer to someone who wanted a one-off, or just a handful of shirts was simply no, and now they can at least get something. Also, it’s a relatively rapidly-maturing sector of the business, and machinery is changing all the time. The company that was selling the most machines just 4 years ago isn’t in business any more, and the company that took the lead from them is hanging on by a thread. I don’t know what kind of machines RedBubble uses, so I can’t compare, but we’ve got the Brother machine, and so far, while I’m not totally jazzed by the color on dark shirts, (reds are good, but bright blues and greens are weak spots) the detail hasn’t been a problem. It’ll be interesting to look back in another 10 years, and see where it is. The things I want to keep an eye on in the short term are 1. cost the ink is expensive, 2. the finish the shirts feel like an old-skool iron on transfer, due to the pre-treatment (a transparent spray that helps to hold the fibers down and give the white ink a better surface to adhere to) and the fact that they get pressed in a heat press post-printing, 3. wearability and washability I need to get a few shirts into my regular laundry cycle 4. color management what I’m seeing on screen is not what I’m getting from the press, but I’ve only just begun to dig on that, and I learned some interesting stuff this weekend.

  1. Pretreat Quality




    Build Quality




    Cost of Ownership


    The ViperOne made the process of preatreating garments for DTG incredibly easy, relative to the manual process associated with a Wagner HPLV spray gum… Although there was always a process of dialing in the machine for any particular garment blank, once the settings were determined any employee could pretreat quality garments for hours on end.

    NOTE: Between periods of use, and depending on the overall tank size and volume of your air compressor, you will sometimes need to dial in the settings for a particular garment, even after finding the appropriate settings at a previous time. Things change, although sometimes within reasonably small margins (which can sometimes make the difference between failure and success in DTG printing).

    The build quality is not exactly “industrial”, but the value of the product is far greater than the sum total of its parts – the machine made our lives so much easier, and our print quality results far more consistent. If you press and hold the spray button to initiate the process, the spray unit will go to the back of the machine and simply continue to spray…. This was weird.

    Compared to a Wagner gun, the cost of pretreatment “per garment” is way better, although there is still a lot of waste material collected…. It would be nice to see this issue addressed, as some images simply do not require the solid square of pretreatment spray (which is still a marginal cost when compared against the cost of the actual ink used on each print).

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