Clamp Pressure on Silicone Molds: Stopping Flash Without Crushing Cavities
Clamp pressure on silicone molds - how much force stops flash without crushing cavities, Shore A effects, and MOQ 50 production tips.
Kyler Yang · Founder5 min read
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Operators crank clamps until flash disappears - and crush cavity floors flat. RUUIPON designs trays so mating faces seal at moderate pressure. Production stays at MOQ 50 with prototypes in 3-7 days to tune the split.
Quick answer: Increase clamp until flash is trim-light, then stop. If cavities go shallow, you over-clamped or walls are under 2.5 mm.
Clamp Checklist
| Symptom | Likely cause |
|---|---|
| Heavy flash | Low clamp / warped face |
| Shallow casts | Over-clamp crush |
| Uneven flash | Keys misaligned |
| White stress marks | Point load on webs |
Over / Under Clamp
Flash trimming QC: flash guide. Defects: common defects.
Setup Method
Use flat platens, distribute force, verify keys seated - registration keys.
Shore A Effects
Softer Shore seals easier but crushes easier. Lock Shore on sample - Shore guide.
Two-Part Tools
Parting design: parting line design.
Frequently Asked Questions
Vacuum press instead of clamps?
Possible on some lines - say so on RFQ.
MOQ / lead time?
MOQ 50; prototype 3-7 days.
Contact?
[email protected] | +86 135 3006 2969 | Contact.
Ready to order custom silicone molds?
Free quote for OEM/ODM projects. MOQ 20 · Prototype 3-7 days · FDA/LFGB available.