User Guide for Blu (Emerald Blue, Blu Clear V2, Blu Obsidian Black, Blu Nlyon Black, Blu Nylon Mecha)

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.

 

 

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

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 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

 

Exposure For Blu Nylon Black and Blu Nylon Mecha

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 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

3. Recommend best support settings

Make sure the support tip diameter is 1.2mm for larger prints with a depth of 0.5mm.

(Setting come from: 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 73D
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