Blu User Guide
User Guide for Blu (Emerald Blue, Blu Clear V2, Blu Obsidian Black, Blu Nlyon Black)
1. Introduction
Blu is developed to be a strong resin that has high resolution, precision, and is easy to print. It is tough and hard enough for making functional parts yet easy to print and clean for general use.
And it should not stink up user's work environment
Due to higher polymer content for its outstanding mechanical properties, the ideal printing condition for Blu is over 25C.
If user can maintain a resin temperature of 30C, the printing time could be further reduced
The shelf life of the resin is one and a half years.
Even if it can be stored for such a long time, we still recommend that you use it in half a year.
UV Resin is a liquid sensitive to temperature, light, and time. Long-term storage will cause the components and pigment of the resin to precipitate and separate.
2. Print setting download: Please download profiles here the base for Elegoo, Anycubic, Phrozen, Peopoly, EPAX, Creality.
Check out recommended support settings if you have print failures
Exposure For Blu and Blu Clear V2 (Not Blu Obsidian Black, Not V3)
| Recommended | Resin Temperture 25-35C | Room temperature 20-28C | |||||
| Printer | Layer Height | Exposure (s) | # of Initial Layers | Exposure for Init Layers | Exposure (s) | # of Initial Layers | Exposure for Init Layers |
| Photon | 50um | 11-12 (s) | 4 | 60 s | 12-13 (s) | 6 | 90 s |
| Photon-S | 50um | 10 (s) | 4 | 60 s | 11 (s) | 6 | 75 s |
| LD-002R | 50um | 10 (s) | 4 | 40 s | 11 (s) | 4 | 50 s |
| EPA X1 | 50um | 10 (s) | 4 | 55 s | 10 (s) | 6 | 75 s |
| EPA X1 | 100um | 12 (s) | 4 | 75 s | 12 (s) | 6 | 90 s |
| Elegoo Mars | 50um | 11 (s) | 4 | 50 s | 11 (s) | 6 | 60 s |
| Shuffle | 50um | 9(s) | 5 | 75 s | |||
| Shuffle XL | 50um | 12(s) | 5 | 75 s | |||
| D7 | 50um | 9(s) | 5 | 75 s | |||
| Inkspire | 50um | 11s | 4 | 50 s | 12-13 (s) | 6 | 90 s |
| Sonic Mini | 50um | 4s | 5 | 35s | 4s | 5 | 35s |
| Moonray | 50um | use settigs for nextdent Ortho rigid | use settigs for nextdent Ortho rigid | ||||
Note: 10mm lift distance help, lift speed 40mm/min, with support facing side surface
| Photon Mono | Where to find printer profiles: https://drive.google.com/drive/folders/1eCz4_dc0fT-jfBLp4L9mKYebY90lfHHO?usp=sharing | ||||||
| Photon Mono X | Where to find printer profiles: https://drive.google.com/drive/folders/1eCz4_dc0fT-jfBLp4L9mKYebY90lfHHO?usp=sharing | ||||||
| Mars 2 Pro | Where to find printer profiles: https://drive.google.com/drive/folders/1eCz4_dc0fT-jfBLp4L9mKYebY90lfHHO?usp=sharing | ||||||
| Mars 3 | Where to find printer profiles: https://drive.google.com/drive/folders/1eCz4_dc0fT-jfBLp4L9mKYebY90lfHHO?usp=sharing | ||||||
| Saturn | Where to find printer profiles: https://drive.google.com/drive/folders/1eCz4_dc0fT-jfBLp4L9mKYebY90lfHHO?usp=sharing | ||||||
| Sonic Mini 4K | Where to find printer profiles: https://drive.google.com/drive/folders/1eCz4_dc0fT-jfBLp4L9mKYebY90lfHHO?usp=sharing | ||||||
| Might 4K | Where to find printer profiles: https://drive.google.com/drive/folders/1eCz4_dc0fT-jfBLp4L9mKYebY90lfHHO?usp=sharing | ||||||
| Mega 8K | Where to find printer profiles: https://drive.google.com/drive/folders/1eCz4_dc0fT-jfBLp4L9mKYebY90lfHHO?usp=sharing | ||||||
| Slash | Siraya on the Slash is better than anything I’ve tried...and I’ve tried 5-6 other resins on the Slash. Example from left to right are 100um, 75um, and 50um. The one I’m holding is 50um. 100um 5 sec 75um 4 sec 50um 3.5 sec 25um 2.8 sec 10um 2.5 sec - LED power 250 (default) - First layer for all 12sec/ first 3 layers (default amount). - Slow setting for Lift speed - 8mm lift height is safest and allow time resin to flow back (they only allow you to pick from 3,8, and 15mm height...which sucks...I'd like 6mm if I could. - Cooldown between layers on auto (smaller prints i do 2sec to speed things up) - Supports point(head) size no less than 1mm, but 1.5 is recommended with 2mm shaft. |
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Exposure For Blu Obsidian Black and for Blu V3
| Recommended | Resin Temperture 25-35C | Room temperature 20-28C | |||||
| Printer | Layer Height | Exposure (s) | # of Initial Layers | Exposure for Init Layers | Exposure (s) | # of Initial Layers | Exposure for Init Layers |
| Photon | 50um | 9.5 (s) | 4 | 60 s | 9.5 (s) | 4 | 60 s |
| Photon-S | 50um | 7.5 (s) | 4 | 50 s | 7.5 (s) | 4 | 50 s |
| LD-002R | 50um | 9 (s) | 4 | 40 s | 9 (s) | 4 | 50 s |
| EPA X1 | 50um | 9 (s) | 4 | 55 s | 9 (s) | 4 | 55 s |
| Elegoo Mars | 50um | 9.5 (s) | 5 | 45 s | 9.5 (s) | 5 | 45 s |
| Shuffle | 50um | 9(s) | 5 | 75 s | |||
| Shuffle XL | 50um | 12(s) | 5 | 75 s | |||
| D7 | 50um | 8(s) | 5 | 65 s | |||
| Inkspire | 50um | 10s | 4 | 50 s | 10s | 4 | 50 s |
| Moonray | 50um | use settigs for nextdent Ortho rigid | use settigs for nextdent Ortho rigid | ||||
| Sonic Mini | 50um | 3s | 5 | 30s | 3s | 5 | 30s |
Note: 10mm lift distance help, lift speed 40mm/min, with support facing side surface
Exposure For Blu Nylon Black Only
3. Recommend best support settings
Make sure the support tip diameter is 1.2mm for larger prints with a depth of 0.5mm. See more full settings recommended
https://www.facebook.com/groups/sirayatech/permalink/290257771885611/
It is best to use island style base like below left, not the raft style on the right. If you have problem keeping first layer on, make sure you level again to minimize gap between build plate and LCD screen.
4. Cleaning
- Use a painter brush (or any brush made with hair) remove excess resins on the printed part with Use 95% concentrated Ethanol (preferred) or IPA to clean. Some form of methnol should work but make sure it does not contain acetone.
- Do not submerge the parts in alcohol for more than 5 minutes After cleaning, remove alcohol as soon as possible with a hair dryer or air blower. For complex parts with lots of cavities, it may be a good idea to clean/dry multiple times.
- You can check by touching the dry surface of the part to see if it is still sticky. If the dry surface is still sticky, wash some more and dry again.
5. Post Curing
- Blu reached its optimal strength when the printed part was post-cured with UV after cleaning. Use 395-405nm UV light and cure for about 15 minutes. (UV light below 395nm will make the resin yellow quickly)
- Make sure the resin is completely cleaned off and there is no alcohol left (it needs to be dry) on the print before curing.
- Curing by submerging objects in water will significantly increase curing efficiency.
6. Biocompatibility Certification
For Biocompatibility related application, please follow post-processing guideline here: https://siraya.tech/blogs/news/blu-biocompatibility-certification-iso-10993
7. Mechanical Properties
Blu Tough Properties
Shore Hardness 85D
Tensile Stress at Break 50 MPa
IZOD Impact 45 Notched, J/m
HDT at 0.455 MPa 70℃
Elongation at Break 32%
Young's Modulus 1800 MPa
Blu Nylon Properties
Shore Hardness 80D
Tensile Stress at Break 60 MPa
IZOD Impact 53 Notched, J/m
HDT at 0.455 MPa 63℃
Elongation at Break(%) 40%
Young's Modulus 2000 MPa
Blu Nylon Mecha Properties
Shore Hardness 82D
Tensile Stress at Brea 58 MPa
IZOD Impact 50 Notched, J/m
HDT at 0.455 MPa 65℃
Elongation at Break 37%
Young's Modulus 1900 MPa