20 g Platinum Inhibitor Test Slug Protocol | RUUIPON

A 20 g platinum slug on a hidden land of the master is the gate before we weigh a production cup. Mix the same 1:1 or 10:1 you will pour, degas a tiny shot if the grade needs it, butter a non-show face, and wait the scheduled cure. Pass is snap-cured, dry, no grease against the master. Fail is tacky on the print/wood/clay side while the slug's back (air side) is fine. That pattern is inhibition, not "needs more hours." This page is the *coupon protocol* — not the SLA wash/UV/seal essay, not the sticky-face diagnosis overview. Skip the slug and pour a food logo "to see," and you have scrapped a cavity.

RUUIPON slugs masters in Bao'an, Xinhe Blvd, Shajing, since 2018. Prototype is 3–7 business days after CAD lock — lock includes a quiet master. Production is MOQ 20 pieces per design. Simple 3D is USD $50 when that CAD scope applies (often the right move after a failed slug). Platinum shrink typically about 0.1–0.3%. Steel/LSR *parts*: wydsilicone.com. SLA chemistry: SLA wash/UV/seal. Sticky-face overview lives elsewhere; we will not clone it.

Does not apply when the whole mix stays soft (ratio, cold shop, dead kit), when you meant a dump coupon of epoxy, or when the land you slugged is a sealer the logo never got. A pass on the base and a fail in a shadowed undercut is why the land has to represent the face.

Where the 20 g goes

Pick a hidden land that saw the *same* prep as the show face: same wash, same sealer, same handling gloves. The underside of an SLA that was never UV'd is a lying coupon. A sealed flat and a raw counter will disagree.

Mass: about 20 g is enough to feel snap vs tack and small enough that a fail does not eat the kit. You can go a little heavier on a coarse wood grain so pores fill. You cannot slug "a smear" and call it a test.

Control: a second 20 g on clean polypropylene or a known-good cup wall. If both are tacky, the kit or the room is the problem (winter temperature, ratio). If only the master land is tacky, the master is the problem.

The photo that would prove a slug: puck on a hidden land, air side vs master side, millimetre scale, prep notes in frame. A thumbs-up selfie is not pass/fail.

flowchart TD
  A[Master prep claimed done] --> B[20 g platinum on hidden land]
  B --> C[20 g control on clean PP]
  C --> D{Control snap?}
  D -->|no| E[Kit/room/ratio — do not blame the master]
  D -->|yes| F{Master land snap?}
  F -->|no| G[Inhibit — reseal, remodel $50, or change chemistry]
  F -->|yes| H{Land represents the logo?}
  H -->|no| I[Slug a second land that does]
  H -->|yes| J[CAD lock, production cup]

When a pass still fails on the logo

Shadowed SLA well that never saw UV while the base did. Slug the well wall or stop.

Sealer holiday on type. Slug looks good on a filled flat.

Latex fingerprint added after the slug, before the pour. Handle with nitrile.

Sulfur clay smear on the face after a good coupon on the back.

Confirm: do not bake a food cavity to "finish" a fail. Recast from a quiet master.

ISO 3302-1 M2 is a rubber class, not a coupon spec. CAD lock waits on a pass that represents the face.

Tin-cure slugs exist for craft dumps, but a tin coupon does not clear a platinum food path. If the master only "works" with tin, that is a dirty-master tell, not a reason to switch chocolate to condensation-cure. Run the platinum 20 g. If it fails, clean or remodel. Humidity and winter thickness can fake a fail — that is why the PP control sits next to the master land in the same hour.

Do not reuse a slug puck as a Shore A button for a production spec. The puck is contaminated with whatever was on the master. Shore belongs on a dedicated plaque.

Failure: hope pour after a pretty SLA

Symptom: logo wells greasy, sprue snap-cured.

Cause: no slug, or slug on the wrong land.

Fix: $50 remodel when fighting the print is more expensive than a pour-ready master; or finish the print and slug again. We would not ship the tacky well.

Typical shop values

Caption: typical shop values, not a named PO.

Slug habits we would not recommend

We would not recommend a hope pour on a food logo to skip 20 g.

We would not recommend slugging a land that did not see the same prep as the face.

We would not recommend extra oven time as a fail repair.

We would not recommend reading a cold, undercured slug as poison without a warm control.

We would not recommend cloning the SLA wash essay as this protocol.

Worked example: 20 g pass on the base, fail in the counter

Logo ice master, SLA, buyer slugged the base — snap. We slugged a letter counter — tack. Wash/UV had missed the well. They finished UV, resealed, second slug passed, platinum 1:1 tray. Prototype 3–7 business days after CAD lock. No extra $50 because they kept their print. Production MOQ 20 of that design.

Mix-up: slug = first article dump

The slug tests the *master against platinum*. A first dump tests the *cavity against chocolate or resin*. Passing a 20 g puck does not waive vacuum on the production cup, and it does not waive a jacket on a wet dump. It only says the master is chemically quiet enough to pour. Keep the puck with the traveler until CAD lock so nobody 're-preps' the face afterward. Related: test-cast QC, contact.

What to ask when you're buying a slugged master

• Which land will represent the logo?
• Control puck on PP, same mix?
• Food vs craft — fail on food is recast, not bake?
• Remodel at $50 if the print will not quiet?
• After lock, 3–7 business days, then MOQ 20 / design?

RFQ copy-pack — 20 g slug

Paste into [email protected]:

Object: RTV mold, slug the master before the production cup, not LSR Master: SLA / FDM / SLS / wood / metal Prep already done Dump: food or craft We slug a hidden land that matches the face File: photos of the land + millimetre scale, or ship the master CAD: quiet print OR USD $50 3D if we remodel Prototype 3–7 business days after CAD lock, then MOQ 20 per design Who keeps the master

Send a land that matches the logo, not "looks cured to me." We slug first — not a blank quote request. Phone +86 135 3006 2969. Xinhe Blvd, Shajing, Bao'an. Shop since 2018.

FAQ

What is an inhibitor test slug? About 20 g of the same platinum mix on a hidden land plus a clean control. Tack on the master side only is inhibition.

Can I skip it if the print looks washed? We would not on a food logo. Looks are not a coupon.

Why did the slug pass and the logo fail? The land did not represent the face — shadow UV, sealer holiday, or later contamination.

Does a failed slug mean dead silicone? Not if the PP control snapped. Fix the master or remodel. Mix 1:1 or 10:1 still stands.

Will the slug delay the 3–7 days? The clock starts at CAD lock, which includes a quiet master. A fail is not locked. MOQ 20 per design after the witness.