Trying to follow I-Engrave Air Assist installation Instructions and I have alot of Questions [RESOLVED!]

Hi,

I hope someone here has successfully installed the air assist. I have a few questions.

  1. My laser head does not have a nozzle with an air hose. There is a hose but it hangs straight down and is not connected to anything.
  2. I did not get an allen wrench and the ones that came with the I-Engrave unit are all too big. did anyone else get one.
  3. I did not receive a plug for the hole they speak of in the instructions but it is covered by the large nozzle any way.
  4. How does the new nozzle connect? I see a hole on the side of it were possibly a set screw would go but alas no set screw either.

Love to hear back with good news.

Dennis F, a Noob

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Hi, sorry to hear you are having some problems.

Unfortunately, I don’t have this machine yet but thought I would put @rinsky awesome tutorial video here for you to look at. Maybe it will answer some of your questions. If not, please take some photos of your issues so others can get a clear view of what you are asking.

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@Dennis_Flynn1, there should have been a specific air assist lens cover in the box with the air assist module. To remove the original, you will pull down the focusing tab so that it is extended outside the laser module. That should help you get access to the three screws that attach the original lens cover so you can remove it. You will use the Allen wrench to remove the three screws and the original lens cover will fall out when you turn the lesser module over. Then attach the air hose that is hanging down in the laser module to the air assist nozzle coming off the smaller lens cover that should have been in the air assist box. Before you drop the air assist lens cover over the lens, lightly loosen the Allen wrench screw on the side to allow the lens cover to drop on easier. Once it is dropped on you will use the hole on the side to tighten down the Allen wrench screw on the air assist lens cover to make sure it is tight and wrong fall off. The plug for the whole should be in the air assist box as well. Then the nozzle on the top of the module will be connected to the air hose coming from the air assist box. Please let me know if you need more help. I could probably pull some pictures together for you.

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Hi @Dennis_Flynn, welcome to the community! :tada:

My iEngrave didn’t come with external accessories either—no air assist or rotary attachment—so I’m in the same boat. I recommend following @Cory_Barger’s guidance closely; they’ve been super helpful with setup tips. Please keep us posted on your progress—I’m rooting for a smooth and successful install! :dash::sparkles:

And thank you @BellethehowtoGuru for the tag! I wish I had more insight to share, but I really appreciate @Cory_Barger stepping in. Your support means a lot to all of us!

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Cory ,

Thanks for the response. Did they supply you with the small wrench to remove the nozzle?the smallest one that came with the main unit is to large. Looking at the new nozzle i figured there should be a set screw in the empty hole but there wasn’t and no plug either. Do you know the size of the allen wrench i would need?

Thanks again,
Dennis

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Thanks for the response! Here is a picture of the laser head and nozzle.

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Dennis,

Thanks for the information. The air assist came with the hex wrench (unfortunately I don’t have my hex wrench kits at the house currently to be able to tell you the size, but it is small, I know that) that you use to remove the screws from the original lens cover and is the same hex wrench you use to tighten the set screw on the air assist nozzle. The bags in the air assist kit would have included all the parts and tools needed for the removal and installation of the air assist nozzle. If you do not have all the contents, it is possible that a bag was left out. I know the way they package their equipment, that things hide. If it isn’t in there then you would need to reach out to support to have a new kit sent to you. I know from experience that errors can be made. My air assist kit power adapter was for the UK and not the US when I received mine.

I have provided the steps below to do the installation with some pictures that I took. I know you may have done some of these steps, so please feel free to advance to the step you might find helpful if any. Please let me know if you have any other questions, I am happy to help.

Step-by-Step Installation Instructions

Step 1: Power Down and Unplug

Before you begin, turn off the LOKLiK iEngrave and unplug the power cord for safety. Allow a few moments for any static or residual power to discharge.


Step 2: Remove the Set Screws

Locate the three small screws on the sides of the original lens cover at the bottom of the laser head.

  • Use the provided Allen wrench to carefully loosen and remove these screws. (I also removed the actual set screws as well as mine had started to work themselves out in the process of the laser moving and I didn’t want to do any damage.)
  • Keep them in a safe place, as they are small and easy to lose.


Step 3: Remove the Original Lens Cover

Once the set screws are out, gently slide down the original lens cover to remove it from the laser head.

  • Avoid touching the lens itself—if you do, clean it carefully with a lens wipe before reassembling.


Step 4: Position the Air Assist Nozzle

Take your new air assist nozzle assembly and align it with the same mounting position where the lens cover was attached.

  • The nozzle opening should face straight downward, directly over the laser’s focal point.
  • Ensure the air inlet port (the small metal tube on the side of the nozzle) faces outward and is accessible for the tubing connection.
  • Attach one end of the air tubing to the metal inlet on the air assist nozzle. Push it firmly until it clicks or feels snug. (Doing this step now will help with the headache of doing it after the nozzle is installed.)


Step 5: Secure the Nozzle

Insert the set screw (the new ones provided with the nozzle) into the hole on the side of the nozzle mount. (Mine was installed, but I did loosen it as the air assist nozzle is a tight fit.)

  • Tighten it evenly and gently using the Allen wrench—just snug enough to hold the nozzle firmly in place without over-tightening.
  • Double-check that the nozzle is centered and secure.
  • Insert the plastic plug on the side of the laser head module where the hex wrench went to tighten the set screw.


Step 6: Connect the Air Tubing

  • Route the tubing along the cable management path or with the laser’s wiring bundle to keep it tidy and prevent snagging.
  • Connect the other end to your air pump or compressor (depending on your setup).


Step 7: Test the Airflow

Before you resume engraving:

  1. Power on the air pump.
  2. Check that air is flowing smoothly through the nozzle and directed toward the laser’s focal point.
  3. Look for steady airflow, not pulsing or leaking—adjust tubing connections if needed.

Step 8: Test Engraving Performance

Run a small test engraving or cut with air assist on. You should notice:

  • Cleaner cuts with less burn or scorch marks.
  • Reduced smoke buildup around the laser beam.
  • Better consistency in engraving depth and color.

:white_check_mark: Final Tips:

  • Do not overtighten screws around the lens area.
  • Inspect the lens regularly and clean it with proper optics wipes.
  • Keep the air tubing clear of moving parts when the laser head travels.
  • Adjust the air pressure based on material — lighter for engraving, stronger for cutting.
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Cory,
Thanks tons! I have contacted Htvront for the hex wrench and plug. Seems pretty straight forward with the hex wrench.

Appreciate your help!

Dennis

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Absolutely! Good luck and let me know if you need anything else. I am happy to help!

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Thank you for this! We got the all in one package and had no clue with how to set up the air assist and couldn’t find a good video on YouTube. This was perfect!!

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