Figure 4 JEWEL MASTER GRY

Designed for the jewelry casting professional, Figure 4™ JEWEL MASTER GRY produces accurate, reproducible, and highly detailed master patterns for jewelry casting in silicone using the Master Pattern print mode. Figure 4 JEWEL MASTER GRY also produces fast, high-quality jewelry prototypes to demonstrate jewelry designs to customers using the Prototype print mode. The gray color reveals ultra-fine detail and surfaces, while the material properties are specifically suited for producing high-quality silicone molds.

General Tips

  1. General Best Practices apply.
  2. See the FAQ below if you are experiencing printing failures.
  3. The most important factor to ensure printing success is getting the supports correct.
  4. Check the catch-tray glass inside the printer often and clean as needed.
  5. Pour unused print material through a paint strainer funnel to remove any print debris to keep material in optimal condition. Follow the recommendations here for funnel usage.
  6. Use the JEWEL MASTER GRY Master Pattern support style with the 30µm Master Pattern print mode to print high-resolution, master-pattern parts.
  7. Use the JEWEL MASTER GRY ProtoType support style with the 50µm ProtoType print mode to quickly print lower-resolution prototype parts.
  8. The JEWEL MASTER GRY print modes are optimized for jewelry type parts. These print modes may not be reliable for large, non-jewelry type parts. Increase cure depth as needed to avoid delamination between layers. Add 1-2 seconds to the Interval Pause Time and the Interval Down Time values to improve printing reliability. Use the general purpose support styles instead of the jewelry support styles for non-jewelry type parts.

Orientation

  1. Orient thick parts to minimize part cross-sectional area.
  2. Orient parts so part layers are mostly self-supporting during printing.
  3. Orient parts so supports scars land on surfaces and locations that are easily sanded.
  4. Increase part-base Z-height from 3mm to 5mm for easier cleaning and part removal.
  5. Orient rings at 45° to minimize pixel stepping for optimal print quality.

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Figure 1. Ring orientation example in 3D Sprint

Add Supports

Add supports to the part using the Create Supports function under the Smart Supports icon.  Examine the support contact points to ensure parts are properly supported and determine where points need to be added and removed.  In 3D Sprint, start by viewing the rings from the bottom-up.

Thin-Ring Supports

The example below demonstrates supporting a thin ring for optimal printing reliability and print quality.

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Figure 2. Example ring user view and bottom view.

 

Click on the Smart Support icon. Go to the Style dropdown and choose JEWEL MASTER GRY Master Pattern or JEWEL MASTER GRY ProtoType, depending on the application. If these support types are not present, click on Import and select the support style file from the file location.

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Figure 3. Ring view from bottom-up with Smart Support tool open

 

Go to the Analyze tab and click on Analyze Placement to view the default supports. This provides a good starting point; but there are areas where you can remove points, and areas where you should add points to support this ring correctly.

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Figure 4. Default support placement.

 

Go to the Modify tab to begin adding and removing support points as needed.

TIP: With the Modify tab open, click on the part to add a support point. Hold the CTRL key and click on a support point to erase it.

 

Click on the View icon, scroll down to Clipping, and click on the box next to the Z. This activates the Z-Clipping plane. Click on the Isometric view button. Select the blue-outlined plane and drag up. The ring will form as it will be during printing. Zoom in and look at how details and features will be printed.

 

Click on the Bottom view button, click on the gray clipping plane area, and pull up and down to expose more or less of the ring.

Add additional support points along the bottom of the ring, moving the clipping plane as you go.

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Figure 5.  Ring bottom view during the process of adding and removing support points.

 

Continue to move the z-clipping plane up and adjust the view to expose and remove unnecessary support points. Click Update Supports to view supports. Click on Point to go back to adjusting support-point locations. Click on the Clipping Z box two more times to remove the z-clipping plane.

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Figure 6. Ring user view during the process of adding and removing support points. Final support design.

 

This ring can now be saved and exported with supports as an .STL file. When needed, it can be imported into a new print file with the supports ready to go.

Wide Band Ring Supports

Rings with wide bands require more anchor points on the bottom half of the ring band. This will help maintain the roundness of the ring.

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Figure 7. Wide-band and narrow-band rings.

 

The default anchor points on the ring band will not be enough to maintain the shape.

NOTE: Because manual support editing is necessary, 3D Sprint defaults to less supports so that removing supports and adding supports is easier for the user.

 

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Figure 8. Thick-band ring with default support points and manually added points.

Adjusting Cure Depth

The default cure depth provides a balance of resolving both positive and negative features. Some ring geometry may benefit from adjusting the cure depth higher to focus on resolving fine positive features. Other ring geometry may benefit from adjusting cure depth lower to focus on resolving fine negative features. Make adjustments up in cure depth in 10-20 µm increments. Make adjustments down in cure depth in 5 µm increments. Click the Build Style icon and adjust cure depth for each region layer.

Part Cleaning

Cleaning parts while still attached to the print platform reduces possible handling damage, and is faster than cleaning each part individually. Use several cycles of rinsing with fresh IPA and blowing compressed air to dislodge print material to clean fine features. Parts may need a final cleaning step after removing supports if spots of print material remain.

TIP: IPA already dirty with JEWEL MASTER GRY material cleans slightly better than using only fresh IPA. Using a two-step dirty IPA/clean IPA cleaning process works best.

Support Removal

Remove supports soon after cleaning.  Once parts fully dry, support contacts are slightly stronger and may be more difficult to remove. Use tweezers to remove side supports by gently pulling them away from the part.

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Figure 9. Removing side supports on the print platform.

 

In some cases, it may be easier to remove the parts from the print platform prior to removing the supports. Use the punch tool to detach parts from the print platform. Use tweezers to remove supports inside the part.

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Figure 10. Removing side supports off the print platform and removing inside supports.

 

For thicker rings, pull gently up and at an angle to separate rings from the bottom supports.

For thinner parts, carefully insert tweezers under the part. Use tweezers to support the part and to apply upward pressure to separate the part from the bottom supports.  For delicate parts, work slowly, a little at a time, until the whole part is separated from the supports.

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Figure 11. Using tweezers to support parts while separating from supports.

 

If parts are removed carefully, most of the support nibs should be projecting out of the surface. This is important because positive support nibs can be sanded flush and leave no support scars.

TIP: Always post-cure parts before sanding support nibs flush. Parts are weaker than supports prior to post-curing. After post-curing, parts and supports have equal strength and sanding gives the desired result.

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Figure 12. Magnified image of positive support nibs on the bottom of a ring.

 

Frequency Asked Questions

  1. My base layer failed to attach to the print platform. What should I do?
Jewelry materials are formulated for extremely high detail and require higher tolerances for the print platforms. Pour the print material through a paint funnel filter back into the bottle to remove any possible print debris that could cause a problem. Clean the resin tray thoroughly, re-install, pour the filtered material back into the resin tray, select a different print platform and try the print again.
  1. My base layer printed, but my supports and ring failed to print. What should I do?
  1. If you choose to combine parts while generating supports, this generates support base-trusses between parts, which covers a lot of the holes in the print platform. If the holes are covered, print material can’t flow through the print platform, which can result in support attachment failures. Generate supports with all parts as separate objects to allow free space between parts for fluid to flow through the print platform.
  2. If parts are set too close together, it can result in the same issue as described above. Try providing additional space between parts.
  3. If problem still persists, try increasing the support cure depth by intervals of 10µm.
  1. My base layer and supports printed, but my part failed to print. What should I do?
To achieve the best print quality of jewelry parts, it is better to use many supports with very fine contacts than to use fewer supports with large contacts. When supports print, but parts fail to print, the first solution is to increase the number of supports. Review the support contact points and increase this density and try printing again. If supports are very close together and parts are still failing to print, adjust the support contact size by increasing the Pillar Top Ratio slightly (increments of 0.05). Increasing the contact area will increase the difficulty of removing rings from supports, but should improve the printing reliability if this is a problem.

 

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3D Systems, Inc.
333 Three D Systems Circle | Rock Hill, SC | 29730
www.3dsystems.com

 

 

 

©   by 3D Systems, Inc. All rights reserved. Specifications subject to change without notice. 3D Systems, the 3D Systems logo are registered trademarks and Figure 4 Standalone and Figure 4 are trademarks of 3D Systems, Inc.

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