Fill Resin Tray With Material

HARMFUL IRRITANT WARNING: Always handle the resin tray with care, even if you believe there is no material in it. wearing contact lenses when handing a resin tray filled with material is not recommended. Wear 100% nitrile gloves when handling the resin tray, even if you believe there is no material in it. Be careful not to pour material outside the resin tray, or to allow material to splash outside the resin tray. Liquid material has the potential to damage electrical equipment, particularly in the lower part of the printer.

TIP: You may choose to hold the material bottle with two hands, just in case it slips out of one hand, so that you do not drop the material bottle.

Mixing Old and New Materials

NextDent materials are assigned a "lot number" when they are manufactured. This number can be found on your bottle of material.

Biocompatible Materials

For biocompatible materials, those that are CE certified as a medical device, you can NOT mix materials that come from two different lot numbers, even if they are the same material type. Doing so will compromise the ability of 3D Systems to reconcile any issues that might arise with these materials. Biocompatible materials currently include: Surgical Guide (SG), C&B MFH, Ortho IBT, Ortho Rigid, Tray, Denture 3D+, and Try-In.

Non-biocompatible Materials

For non-biocompatible materials, those that are not CE certified as a medical device, it is permissible to mix materials from different lot numbers. These materials are not registered and do not have the same restriction. Non-biocompatible materials include: Model 2.0, Cast, and Gingiva Mask.

Fill the Resin Tray

Before filling the resin tray, you should have completed the steps in the section Add/Change Material and Scan Bottle. If you have not done so, do so now.

CAUTION: Failure to properly switch materials will result in reduced reactivity of the new material, even when only very small amounts of different material(s) are mixed in. This will result in build failure and wasted material.


  1. Before pouring the material into the resin tray, be sure you do the following:
    1. Mix the material on the NextDent LC-3DMixer for time specified for your material in the Material Stirring and Curing Chart.

      CAUTION: Failure to sufficiently mix materials before each build may result in color deviation and/or print failure.

    2. If you are using the same material bottle as in your previous build, be sure that the print platform and resin tray are completely clean of debris (such as dust), and/or partially cured material residue.

      CAUTION: Failure to clean the resin tray and print platform of debris may affect the material's reactivity and the printed part's ability to adhere to the print platform.

    3. If you are using a new bottle of the same material, but it has a different lot number than your last bottle, you must either empty the resin tray of the previous material or use a different resin tray for the new bottle. Please see the section above about mixing old and new material.
  1. Before filling the resin tray with material, take note of the markings printed on the front and back.
    1. The MIN mark indicates that the 5mm (0.2 in) pool in the bottom of the tray is full. Do not print if the resin level is below this line.
    2. Each numbered mark indicates 100mL (3.4 fl. oz.) more of resin on top of the 5mm pool, on up to 400mL (13.5 fl. oz.).
    3. The MAX mark indicates a resin level of 430mL (14.5 fl. oz.). See caution statement below.

Keep in mind that the largest possible build on the printer consumes around 200 mL (6.8 fl. oz.) of material.

CAUTION: Do not fill the resin tray beyond 430 mL (14.5 fl. oz.). Doing so risks spilling material and/or getting material on elevator arms during printing.

  1. Slowly pour material until desired height is reached. Hold the bottle low over the tray while pouring to avoid splashing.

TIP: Remember to keep your resin bottle, even after you've emptied it, so that you still have its QR code. If you pour more than one print job's worth of material into the resin tray, you must continue to use the bottle you poured from to scan its QR code before printing. Scan this bottle until your material has printed off. This will allow the printer to properly track how many pours your bottle has been through.

  1. Close printer lid as soon as possible after pouring, so as to avoid any unnecessary exposure of the material to ambient UV light.