Understanding Self-Modeling Resin: Premium Relic Crafting Currency
Self-Modeling Resin is Honkai Star Rail's most valuable relic resource, letting you craft 5-star relics with specific main stats. Unlocks at Trailblaze Level 40 through Omni-Synthesizer. Each synthesis requires 1 Self-Modeling Resin + 100 Relic Remains, targeting Body, Feet, Planar Sphere, or Link Rope slots only.
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Acquisition Methods
Nameless Honor Battle Pass:
- Free track Level 20: 1 resin
- Paid track Level 50: 1 resin
Relic Remains Synthesis:
- Salvage 5-star relics for 10 Remains each
- 800 Remains → 1 Wishful Resin
- Max 2 monthly
Exchange System (v3.5+):
- 1 Self-Modeling Resin → 1 Wishful Resin
- Max 3 monthly
- Resources merge 1:1 since August 13, 2025
Monthly cap: 2 custom relics maximum.
True Cost Analysis
100 Relic Remains = salvaging 10 five-star relics. At 40 Trailblaze Power per Cavern run (1-2 relics), you invest 200-400 Power worth of farming per craft. This excludes the irreplaceable monthly-limited resin itself.
Relic Slot Drop Rate Mathematics
Head and Hands: High-Frequency Drops
Head relics: flat HP only. Hands relics: flat ATK only. Fixed main stats eliminate any customization value—Self-Modeling Resin provides zero benefit here.
Every Head/Hands drop already has the only possible main stat. Crafting these slots wastes premium resources for zero gain.
Probability Calculations
Body Slot:
- CRIT Rate/DMG: 10% each
- HP%/ATK%/DEF%: Higher combined
- Healing Boost/Effect Hit: 10% each
Feet Slot:
- SPD: 12%
- HP%/ATK%/DEF%: 88% combined
Link Rope:
- Energy Regen: 5% (rarest)
- ATK%/HP%/DEF%: 95% combined
Planar Sphere:
- Elemental DMG: 9% each
- Break Effect: 16%
A CRIT Body with optimal SPD/CRIT subs: ~0.3% probability. Any Head with good subs: 3-5%.
Why NEVER Craft Head/Hands
Drop Rate Comparison
Head/Hands:
- 100% correct main stat
- Only subs matter
- 6-10 runs for usable piece
Body CRIT:
- 10% correct main stat
- 50-100 runs average
- 200+ with sub-stat filtering
Feet SPD:
- 12% correct main stat
- 40-80 runs average
- 150+ with optimization
Link Rope Energy Regen:
- 5% correct main stat (rarest)
- 100-200 runs average
Expected Value Per Slot
Head/Hands Crafting:
- Saves 240-400 Power (6-10 runs)
- Zero main stat benefit
- Value: Minimal
Body CRIT Crafting:
- Saves 2,000-4,000 Power (50-100 runs)
- Guarantees desired main stat
- Value: High
Link Rope Energy Regen:
- Saves 4,000-8,000 Power (100-200 runs)
- Guarantees rarest main stat
- Value: Maximum
Efficiency ratio: Link Rope provides 10-20x more value than Head pieces.
Opportunity Cost
With 2 monthly resins, each decision carries three-week costs.
Inefficient:
- Craft Head + Hands
- Result: 2 relics you'd get in 10-20 runs naturally
- Lost: 2 guaranteed rare main stats
Strategic:
- Craft Energy Regen Rope + CRIT Body
- Result: 2 relics requiring 150-300 combined runs
- Gained: 6,000-12,000 Power equivalent
Strategic crafters build optimized sets 3-5x faster.
Priority Crafting Hierarchy
Tier 1: Planar Sphere and Link Rope
Link Rope (Highest Priority):
- Energy Regen (5%): Universal value
- Elemental ATK% for DPS
- Longest farming time
Planar Sphere (High Priority):
- Elemental DMG matching character (9% each)
- Break Effect for Super Break teams (16%)
- Critical for DPS optimization
Tier 2: Body and Feet
Body (Medium-High):
- CRIT Rate/DMG for DPS (10% each)
- Healing Boost for sustain (10%)
- Moderate farming difficulty
Feet (Medium):
- SPD for action economy (12%)
- Most characters prefer SPD
- Craft after Tier 1 complete
Never-Craft: Head and Hands
Permanent blacklist reasons:
- Fixed main stats
- Natural farming: 100% correct main stat
- Sub-stat optimization identical via farming
- Zero time savings vs 10-20 runs
Only exception: Excess resin after completing all Tier 1/2 needs across entire roster (rarely occurs).
Advanced Mechanics: Wishful Resin Integration
Sub-Stat Customization
Single Sub-Stat:
- Cost: 1 Wishful + 1 Self-Modeling + 100 Remains
- Guarantees 1 chosen sub
- 2-3 random subs
Double Sub-Stat:
- Cost: 4 Wishful + 1 Self-Modeling + 100 Remains
- Guarantees 2 chosen subs
- 1-2 random subs
1:4 ratio makes single selection more efficient.
Wishful Resin Sources
- 800 Remains → 1 Wishful (max 2 monthly)
- 1 Self-Modeling → 1 Wishful exchange (max 3 monthly)
- Herta Contracts: 720 Shards for 2 Wishful (expired Feb 25, 2025)
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Sub-Stat Weight Distribution
- SPD: Weight 4 (rarest)
- CRIT Rate/DMG: Weight 6 each
- Effect Hit/RES/Break: Weight 8 each
- HP/ATK/DEF (flat/%): Weight 10 each
SPD appears 2.5x less than flat stats—optimal first selection. CRIT Rate/DMG for second.
Optimal Farming Strategy
Daily Domain Rotation
240 daily Power = 6 Cavern runs at 40 Power each.
Priority Framework:
- Target sets for near-complete characters
- Rotate Cavern/Simulated Universe for Planars
- Salvage off-set and bad main stats
- Track acquisition rates
Salvage 60-70% of drops, generating 100 Remains every 10-15 runs.
Farm vs Craft Decision
Craft When:
- Character needs rare main stat (Energy Regen, CRIT)
- 50+ runs without desired main stat
- Character blocks progression
- Monthly resin expiring
Farm When:
- Main stat >15% drop rate
- Time before content deadlines
- Remains <100
- Other characters need attention
Inventory Tracking
Monitor:
- Main stat distribution across six slots
- Usable pieces per character (main stat + 2 good subs minimum)
- Relic Remains inventory and monthly rate
- Self-Modeling Resin availability and reset timing
- Wishful Resin stockpile
Data-driven decisions prevent emotional crafting mistakes.
Common Misconceptions
Myth: All Slots Equal Farming Difficulty
Reality: Main stat probability creates massive variance. Head piece with any subs: 6-10 runs. Energy Regen Rope with same sub quality: 100-200 runs.
Myth: Crafting Always Saves Time
Reality: Only for rare main stats. Head craft saves 240-400 Power (1-2 days). Energy Regen Rope saves 4,000-8,000 Power (16-33 days). Must account for 100 Remains farming time (10-20 runs).
Myth: Craft Whatever You Need Now
Reality: Immediate needs conflict with long-term optimization. Head piece naturally acquired within days. Same resin could secure rare main stat requiring weeks.
Strategic patience yields 3-5x faster progression over months.
Implementation Guide
Crafting Decision Flowchart
Step 1: Inventory Assessment
- List characters needing optimization
- Identify missing main stats
- Categorize by rarity (5%, 10%, 12%)
Step 2: Priority Ranking
- Rank characters by impact (DPS > Support > Sustain)
- Rank missing pieces by main stat rarity
- Create master priority list
Step 3: Resource Verification
- Confirm Self-Modeling Resin availability
- Check Remains inventory (need 100)
- Verify Wishful Resin stockpile
Step 4: Execution
- Select highest-priority item
- Confirm meets criteria (Rope Energy Regen, Body CRIT, Feet SPD, Sphere Elemental DMG)
- Craft via Omni-Synthesizer
- Update tracking
Step 5: Evaluation
- Assess subs (minimum 2 useful)
- Salvage if unusable
- Document results
Emergency Crafting
Legitimate Situations:
- New endgame content requiring immediate optimization
- Memory of Chaos blocked by missing main stat
- Pure Fiction/Apocalyptic Shadow deadline approaching
- Excess resin after Tier 1 complete
Never Justified:
- Head/Hands under any circumstances
- Frustration-based crafting
- Crafting without sufficient Remains
Monthly Planning
Week 1: Claim free track resin (Level 20), execute first craft if Remains sufficient
Week 2-3: Farm daily, salvage for Remains, monitor progress to 100
Week 4: Claim paid track resin (Level 50), execute second craft, evaluate next month
Account Progression Optimization
F2P Strategy
1 monthly resin demands precision:
- Never craft Head/Hands
- Reserve for Link Rope Energy Regen or Sphere Elemental DMG
- Accept sub-optimal Body/Feet until Tier 1 satisfied
- Maintain 200+ Remains before crafting
Low-Spender (Express Supply Pass)
2 monthly resins enable:
- Primary: Link Rope/Sphere
- Secondary: Body CRIT or Feet SPD for priority DPS
- Strict Head/Hands prohibition
- Wishful Resin integration for critical pieces
Focus on 2-3 core characters fully before spreading resources.
Progression Stages
Stage 1 (TL 40-60):
- Focus: Correct main stats
- Priority: Energy Regen Ropes, Elemental Spheres
- Metric: All characters functional
Stage 2 (TL 60-70):
- Focus: Main stats + 2 useful subs
- Priority: CRIT Body, SPD Feet for DPS
- Metric: Core team optimized
Stage 3 (Endgame):
- Focus: Main stats + 3-4 optimal subs
- Priority: Wishful Resin integration
- Metric: Near-perfect sets
Head/Hands crafting wasteful at every stage.
FAQ
What is Self-Modeling Resin?
Five-star crafting material for 5-star relics with custom main stats. Works on Body, Feet, Planar Sphere, Link Rope only. Requires 100 Relic Remains per craft. 1 monthly from Nameless Honor free track Level 20, +1 from paid track Level 50.
Should I craft Head/Hands?
Never. Fixed flat HP (Head) and flat ATK (Hands) main stats mean zero customization value. Natural drops have correct main stats 100% of time in 6-10 runs—crafting wastes resources.
Which slots to prioritize?
Link Rope Energy Regen (5% drop), Planar Sphere Elemental DMG (9%). Secondary: Body CRIT (10%), Feet SPD (12%). These require 50-200 runs naturally.
How to get more resin monthly?
Nameless Honor (1 free + 1 paid), synthesize 800 Remains → Wishful Resin (max 2), exchange Self-Modeling → Wishful (max 3). Time-limited Herta Contracts offered Wishful via Oneiric Shards.
Self-Modeling vs Wishful Resin?
Self-Modeling customizes main stats. Wishful sets sub-stats. Combined: 1 Wishful + 1 Self-Modeling = 1 chosen sub; 4 Wishful + 1 Self-Modeling = 2 chosen subs. Merge 1:1 since v3.5 (Aug 13, 2025).
Relic Remains needed?
100 Remains + 1 Self-Modeling per craft. Salvaging 5-star relics yields 10 Remains each = 10 relics needed. Generate 100 Remains every 10-15 domain runs via aggressive salvaging.
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