Summary of "What happened to Original Green Stuff? And our plan to remake it!"

Overview

Original Green Stuff (the popular green epoxy modeling putty) has been discontinued worldwide. Once remaining stocks are gone, it will no longer be available. The discontinuation followed a wider market exit by US epoxy-putty manufacturers in August 2025.

Why it stopped being available

Tariffs and anti-dumping duties were imposed on epoxy resins imported from China, India, South Korea, and Thailand — in some cases reaching up to 355%.
Retaliatory tariffs and higher raw-material costs made finished epoxy putty unprofitable for many companies.
Several manufacturers (including PPG, the maker of Neidatite/Green Stuff) shut plants and withdrew from the market.
Result: remaining Green Stuff supply is becoming extremely scarce.

Sil Master / Silkate response (remake plan)

Sil Master (maker of the Silkate brand) says it operates the only epoxy putty stick manufacturing plant in the UK and currently produces over 15 epoxy putty formulations plus GMIX modeling putty. They have invested in modern putty-stick production machinery and are prioritizing an in-house re-creation of Green Stuff.

Key points of their plan:

Re-create a product as close as possible to the original Green Stuff (but not an exact replica).
Change the product format from the original ribbon to separate sticks: one 150 g stick of Part A and one 150 g stick of Part B per pack.
Address common ribbon-format issues (cured bits where two parts touch) and give users better control over mix ratios.
Invite community feedback during development to tailor the formulation to modelers’ needs.

Sil Master invites users to provide feedback on what they liked about the original Green Stuff and what they want changed during development and testing.

Planned / new features

Separate-stick format: two 150 g sticks (Part A and Part B) per pack.
Improved, modeler-tailored formulation (exact properties TBD).
Elimination of the ribbon-format defect (cured center).
Greater control over mixing ratios for users.
Backed by UK manufacturing capacity and experience (Sil Master introduced Green Stuff to UK/Europe in the 1990s).

Comparisons and related products

GMIX (made by the same company): described as softer and smoother and easier to work than Milliput, but it sets harder than many other putties.
The new Green Stuff will be measured against the original Green Stuff (aim is to match it closely) and compared to existing alternatives such as Milliput and GMIX.

Pros (from the company/video)

Local UK manufacturing reduces reliance on overseas suppliers.
Modern production technology is in place.
New stick format addresses a widely reported user complaint about cured bits in ribbon centers.
Separate A/B sticks allow flexible mix ratios and better handling.
Opportunity to improve/tailor formulation specifically for modelers.
Company has long history and experience in the putty market.

Cons and uncertainties

The original Green Stuff cannot be exactly replicated; differences are expected.
No public performance data or user test results for the new formulation yet.
Timing and availability depend on development and scale-up; the current shortage will remain until the new product ships.
Some users may prefer the original ribbon format and feel.

User experience notes

Ribbon-format users commonly reported cured bits down the middle where Part A and Part B touch.
Sil Master emphasises community input on desirable properties and changes.
GMIX is highlighted as easier to work with than Milliput for some uses, and it cures harder than many alternatives.

Numeric / explicit details

Tariffs on epoxy resins reached up to 355%.
Market disruption and exits occurred in August 2025.
Sil Master currently produces 15+ epoxy putty formulations.
Planned packaging: 150 g Part A + 150 g Part B sticks.

Verdict / recommendation

The discontinuation of the original Green Stuff was driven by macroeconomic and trade pressures, not by lack of demand.
Sil Master’s plan to produce a near-equivalent in stick format is a credible and sensible response given their UK manufacturing capacity and experience.
Expect a close but not identical replacement; the stick format and customizable mix ratios are likely improvements for many modelers.
Users who rely on the exact original texture or behaviour should plan to test samples when they become available.
If you care about the original Green Stuff, provide feedback to Silkate and subscribe to their updates to track development and testing.

Unique points (summary)

Original Green Stuff discontinued worldwide; remaining stocks finite.
Market exit driven by anti-dumping duties and tariffs.
PPG (maker of Neidatite/Green Stuff) shut its polymer site; its products no longer available.
Sil Master (Silkate) first introduced Green Stuff to the UK/Europe in the 1990s.
Sil Master HQ is the only epoxy putty stick manufacturing plant in the UK.
Sil Master produces 15+ epoxy putty formulations and GMIX.
Investment in latest putty-stick production machinery.
Plan to remake Green Stuff in-house; product will be similar but not identical.
Move away from ribbon format because of cured bits issue.
New product sold as two sticks: 150 g Part A + 150 g Part B.
Stick format gives greater control over mix ratios.
Opportunity to tailor properties to the modeling community.
GMIX described as softer/smoother/easier to work than Milliput and sets harder than many putties.
Company requests community feedback during development.

Speakers/perspective: the summary reflects the company (Sil Master / Silkate) viewpoint explaining market reasons, manufacturing capability, and the remake plan while inviting feedback.