Working with large pieces on a resin printer can be a daunting task, especially when it comes to slicing the model. The default settings in most slicing software are often not optimized for large prints, which can lead to failed prints or poor-quality results. However, with a few simple tweaks to your slicing settings, you can dramatically improve the success rate of your large resin prints.
One of the most important things to consider when slicing large pieces is the layer height. The layer height is the thickness of each individual layer that the printer will print. For large prints, it is important to use a smaller layer height to ensure that the print has enough detail and strength. However, using a smaller layer height will also increase the print time. Therefore, it is important to find a balance between layer height and print time that works best for your project.
Another important consideration when slicing large pieces is the infill density. The infill density is the percentage of the interior of the print that is filled with material. For large prints, it is important to use a higher infill density to ensure that the print is strong enough to withstand the forces of printing and handling. However, using a higher infill density will also increase the amount of material used and the print time. Therefore, it is important to find a balance between infill density and material usage that works best for your project.
Establishing a Safe Workspace
When working with resin printers, it is crucial to prioritize safety to mitigate any potential risks associated with the resin and printing process. Creating a dedicated and well-ventilated workspace is essential to ensure a safe and healthy environment.
Key Considerations:
Begin by identifying a well-ventilated area with proper air circulation. Consider using an air purifier or exhaust fan to further enhance air quality. Wear appropriate personal protective equipment, including gloves, a respirator, and eye protection, to minimize exposure to resin fumes and particles.
Workspace Setup:
Designate a specific area dedicated solely to resin printing operations. Avoid using the same workspace for other activities to prevent cross-contamination. Keep the workspace clean and organized by regularly wiping down surfaces and disposing of any contaminated materials properly.
Material Handling and Storage:
Handle uncured resin with caution, as it can cause skin irritation. Store uncured resin in a sealed container away from sunlight and heat to prevent premature hardening. Dispose of used resin and contaminated materials according to local regulations to ensure proper waste management.
| Safety Measure | Importance |
|---|---|
| Ventilation | Maintains air quality and reduces fumes |
| Personal Protective Equipment | Protects against skin and respiratory irritation |
| Workspace Hygiene | Prevents cross-contamination and promotes a safe environment |
| Material Handling | Minimizes exposure to uncured resin |
| Waste Disposal | Protects the environment and complies with regulations |
Selecting the Appropriate Resin
Choosing the right resin is crucial for successful resin printing. Consider the following factors when selecting:
1. Resin Type:
| Resin Type | Characteristics |
|---|---|
| Standard | General-purpose resins with balanced properties |
| Tough | High impact resistance and flexibility |
| Dental | Precise and biocompatible, used in dental applications |
2. Resin Properties:
- Viscosity: Affects flowability and print speed. Higher viscosity resins tend to produce more detailed prints.
- Shrinkage: The amount that the resin shrinks during curing. Higher shrinkage can lead to warping and deformation.
- Tensile Strength: Resistance to stretching or pulling forces. Higher tensile strength resins result in stronger prints.
- Impact Strength: Resistance to impact or shock. Tough resins have high impact strength.
- Color: Available in a range of colors to suit specific requirements.
3. Printer Compatibility:
Ensure that the chosen resin is compatible with the printer being used. Different printers have specific wavelength requirements for curing.
4. Safety Considerations:
Handle resins with care as some can be hazardous. Wear gloves and protective gear and work in a well-ventilated area.
Utilizing a Clean and Level Surface
When slicing large pieces for resin printing, it’s imperative to ensure you have a clear and level surface to work on. Here’s a more detailed breakdown of what this entails:
1. Table Setup:
Select a sturdy and level table or workbench. Ensure the surface is free from any debris or dust that could interfere with the slicing process.
2. Leveling Check:
Use a spirit level to confirm that the table’s surface is perfectly level. Any slight incline or decline can affect the accuracy of your slices.
3. Surface Preparation:
Clean the table surface thoroughly with a damp cloth or solvent to remove any oil or grease. Utilize a non-stick mat or sheet on top of the table to prevent the resin from adhering directly to the surface and facilitate easy removal after slicing.
| Recommended Non-Stick Materials |
|---|
|
Using Sharp and Precision Tools
When slicing large pieces for resin printing, it is crucial to use sharp and precision tools to ensure clean and accurate cuts. A sharp blade or cutting tool will minimize chipping and tearing, while a precision tool will provide better control and accuracy.
Recommended Tools
- Utility knife: A sharp utility knife with a new blade is ideal for making straight cuts on flat surfaces.
- Hobby saw: A hobby saw with a fine-toothed blade can be used for more intricate cuts or cuts in thicker materials.
- Band saw: A band saw provides even more precision and control, especially for large or curved cuts.
- Miter box: A miter box can help you make accurate angled cuts when using a hand saw.
Cutting Techniques
- Use a cutting board: Always use a cutting board to protect your work surface and prevent scratches.
- Clamp the material: Secure the piece to be cut with clamps to prevent it from moving or shifting.
- Score the material: Before cutting through the material, lightly score it with the blade to weaken it and make the cut easier.
- Cut slowly and carefully: Take your time and apply steady, even pressure while cutting. Rushing can lead to mistakes and uneven cuts.
- Avoid overheating: If using a power tool, take breaks and let the material cool down to prevent overheating and damage.
Additional Safety Precautions
- Wear safety glasses: Always wear safety glasses to protect your eyes from flying debris.
- Use a dust mask: When cutting materials that produce dust, wear a dust mask to avoid inhaling harmful particles.
- Keep the work area clean: Clean up any debris or shavings to prevent tripping or accidents.
Measuring and Marking the Cuts
1. Determine the Maximum Print Size
Measure the maximum print size of your resin printer’s build plate. This will determine the largest object you can print in one piece.
2. Measure the Object
Use a ruler or calipers to measure the dimensions of the object you want to print.
3. Divide the Object into Sections
If the object is larger than the maximum print size, you need to divide it into smaller sections. Consider the natural divisions in the object to make cutting and assembly easier.
4. Mark the Cutting Lines
Once you have determined the sections, use a pencil or marking tool to draw lines where you will make the cuts. Ensure the lines are straight and precise for accurate alignment when assembling.
5. Use a Cutting Guide
For more precise and professional-looking cuts, consider using a cutting guide specifically designed for resin prints. These guides have slots or guides that ensure straight, uniform cuts.
| Cutting Guide Type | Features |
|---|---|
| X-ACTO Knife Guide | Fixed blade with adjustable cutting depth for precise, straight cuts |
| Vernier Caliper Saw Guide | Adjustable cutting depth and angle for precise and versatile cuts |
| Table Saw Guide | Mounted on a table saw for fast and efficient cutting of larger objects |
Slicing with Patience and Care
Preparing large resin prints necessitates patience and meticulousness. Here are some vital precautions to consider:
1. Preserve Resin:
Splitting the print into smaller sections minimizes the quantity of resin required, reducing waste and saving money.
2. Delicate Handling:
Large pieces are more prone to damage. Handle them carefully to avoid breaking.
3. Avoidance of Collision:
Ensure that print pieces don’t overlap or collide during slicing to prevent damage or print failure.
4. Secure Assembly:
Consider utilizing pins or slots to ensure proper alignment and stability during assembly.
5. Lightweight Structure:
Hollowing out sections or using lattice infills can reduce the weight and material requirements of large prints.
6. Support Structure Strategic Placement:
| Orientation | Placement | Purpose |
|---|---|---|
| Vertical | Under overhangs | Prevents drooping and deformation |
| Angled | At corners and edges | Provides support without obstructing details |
| Flexible | For complex geometries | Conforms to surfaces, minimizing support marks |
Deburring and Smoothing the Edges
Deburring Tools for Resin Prints
Removing the burrs and sharp edges left behind by the printing process is essential for ensuring a smooth and safe finish. Here are some commonly used tools for deburring resin prints:
While sandpaper is a versatile and effective option, it can be time-consuming, especially for larger prints. Dremel tools offer a more precise and efficient solution, but they require practice and skilled handling to avoid damaging the print. Files, scrapers, and sandpaper are excellent choices for smaller prints or areas with intricate details.
To achieve the best results, approach deburring systematically. Start with the larger burrs using coarser tools like sandpaper or files. Gradually move to finer tools like scrapers or Dremel bits to smooth out the edges further. Regularly inspect the print under magnification to ensure a clean and flush finish.
Always wear appropriate safety gear when deburring, including gloves, safety glasses, and a mask if sanding. Avoid inhaling sanding dust, as it can be harmful to your health.
| Deburring Tool | Pros | Cons |
|—|—|—|
| Sandpaper | Versatile, inexpensive | Time-consuming, requires manual effort |
| Dremel Tool | Precise, efficient | Requires skill, can damage prints if handled improperly |
| Files | Good for small areas, intricate details | Less efficient for larger prints |
| Scrapers | Effective for removing burrs on flat surfaces | Can leave scratches if used excessively |
Cleaning and Curing the Sliced Pieces
Once the slicing process is complete, it’s time to prepare the pieces for printing. This involves cleaning and curing, both of which are crucial steps for ensuring the quality and durability of the final product.
Cleaning the Sliced Pieces
After slicing, the surface of the pieces may be covered in resin residue. This residue needs to be removed to prevent it from interfering with the printing process. Use denatured alcohol or isopropyl alcohol to clean the surfaces, being sure to let them dry completely before proceeding.
Curing the Sliced Pieces
Curing is the process of hardening the printed pieces by exposing them to ultraviolet (UV) light. This step is crucial for ensuring the strength and durability of the printed object. UV light boxes or dedicated curing chambers can be used for this purpose.
Curing Parameters
The curing time and intensity will vary depending on the type of resin used. Refer to the manufacturer’s instructions for specific parameters. Generally, larger pieces may require longer curing times to ensure thorough hardening.
Post-Curing
After the initial curing process, it’s recommended to post-cure the pieces for additional strength and stability. This can be done by exposing them to UV light again for a longer duration, typically several hours or even overnight.
Safety Precautions
When handling and cleaning resin, it’s important to wear protective gloves and a respirator to avoid skin and respiratory irritation. Proper ventilation is also crucial to remove any fumes or vapors released during the curing process.
Additional Tips
To minimize the risk of warping or deformation, it’s best to place the sliced pieces on a flat surface during the curing process. Additionally, curing the pieces in a cool, dark environment can help prevent yellowing or discoloration.
For optimal results, it’s recommended to follow the specific cleaning and curing instructions provided by the resin manufacturer.
Storing Sliced Pieces Properly
Once your models are sliced, you must store them correctly to maintain their integrity and prevent damage. Here are some guidelines for proper storage:
Dry Storage
Ensure that the storage area is dry and has low humidity. Excess moisture can soften the resin and make it vulnerable to damage.
Cool Environment
Store the sliced pieces in a cool environment, ideally between 50-70°F (10-21°C). Avoid exposing them to extreme heat, as this can deform or warp the resin.
Avoid Direct Sunlight
Keep the sliced pieces away from direct sunlight. UV rays can penetrate the resin and cause it to yellow or become brittle.
Use Airtight Containers
Store the sliced pieces in airtight containers to prevent dust and other contaminants from accumulating on their surfaces.
Label Containers
Label the containers clearly with the name of the model and the date of slicing. This will help you keep track of your projects.
Handle with Care
When handling the sliced pieces, wear gloves to avoid transferring oils from your hands onto the resin. Handle them gently, as rough handling can break or damage the delicate structures.
Check Regularly
Periodically inspect the stored sliced pieces to ensure there are no signs of damage or deterioration. If you notice any issues, address them promptly to prevent further damage.
Additional Tips
Additional tips for storing sliced pieces include:
- Consider using silica gel packs in the containers to absorb moisture.
- Store the containers in a dark and cool place like a closet or cupboard.
- Handle the sliced pieces on a soft, clean surface to avoid scratching or damage.
Troubleshooting and Problem Solving
1. Layer Separation
If layers are separating, check the following:
- Proper resin exposure time
- Adequate bed adhesion
- Use of a build plate adhesion promoter (e.g., hairspray)
- Tightness of the build platform screws
2. Overcuring
Excessive curing can make prints brittle and snap easily. Adjust the UV light exposure time according to your specific resin and printer model.
3. Bubbles within the Print
Bubbles can result from:
- Rapid printing speeds
- Air trapped in the resin
- Insufficient post-curing
4. Support Failure
Ensure supports are:
- Adequately dense
- Connected to the model at multiple points
- Sufficiently thick and shaped to withstand print forces
5. Stringing or Oozing
Stringing is caused by the resin flowing between the nozzle and the model during printing. Reduce this by adjusting:
- Printing temperature
- Printing speed
- Retraction settings
6. Resin Tank Contamination
Contaminants in the resin tank can affect print quality. Ensure the tank is:
- Free of dust and debris
- Filled with fresh resin regularly
- Covered when not in use
7. Print Distortion
Distortion can occur due to:
- Uneven resin curing
- Printing large prints with insufficient supports
- Excessive exposure to UV light
8. Failed Prints Sticking to the Build Platform
Prevent prints from sticking to the bed by:
- Cleaning the build platform thoroughly before printing
- Applying a bed adhesion promoter
- Adjusting the bed leveling
9. Print Sizes Exceeding Resin Tank Dimensions
For prints larger than the resin tank, use:
- Multiple resin tanks
- Chunked printing (dividing the model into smaller sections)
- Third-party attachments (e.g., resin expanders)
10. Software Errors
Software issues can cause print failures. Ensure:
- Your slicing software is compatible with your printer model
- Your model file is properly prepared and oriented
- Your printer’s firmware is up to date
How to Slice Big Pieces for Resin Printer
When slicing large objects for resin printing, it is important to take into account the limitations of the printer and the slicing software. Most resin printers have a maximum build volume, and the slicing software will need to be able to handle the large file size. Additionally, it is important to consider how the object will be supported during printing, as large objects can be prone to warping and drooping.
One way to slice large objects is to use a slicing software that supports multi-part printing. This will allow you to break the object down into smaller pieces that can be printed separately and then assembled.
Another way to slice large objects is to use a slicing software that supports variable layer heights. This will allow you to print the object with thicker layers in areas that are less detailed, and thinner layers in areas that are more detailed.
It is also important to consider the orientation of the object when slicing. Large objects that are printed vertically can be more prone to warping and drooping than objects that are printed horizontally.
People Also Ask About How to Slice Big Pieces for Resin Printer
What is the maximum build volume of a resin printer?
The maximum build volume of a resin printer varies depending on the model. However, most resin printers have a build volume of around 120 x 68 x 150 mm.
What slicing software can I use to slice large objects?
There are a number of slicing software programs that support multi-part printing and variable layer heights. Some of the most popular programs include Chitubox, Lychee Slicer, and PrusaSlicer.
How do I orient an object for printing?
The best way to orient an object for printing is to consider how the object will be supported during printing. Large objects that are printed vertically can be more prone to warping and drooping than objects that are printed horizontally.
