Properties comparison of furniture grade MS and M2 particleboard products manufactured in Canada.
Bibliographic record
Abstract
A comparative survey of MS and M2 grade particleboard from two different Canadian manufacturers was conducted to quantify the distinction between grades and the consistency in quality of products marketed as M2 or MS for use as ready-to-assemble (RTA) modular furniture components. A total of 20 full-sized 4- by 8-foot (1.22 by 2.44 m) sheets were intensively sampled for density parameters (ovendry, vertical density profile), internal bond strength, flexural strength and stiffness (modulus of rupture [MOR] and modulus of elasticity [MOE]), and face and edge screw withdrawal resistance (SWR). As expected, the MS grade particleboards were lower in density and strength properties; however, the quality of both grades were greatly dependent on the manufacturer. The M2 grade of panels from one manufacturer were similar to or had lower properties than the MS grade from the other. Both grades of panel from press line A met ANSI A208.1 minimum standards for face SWR, MOR, and MOE, whereas both grades of panels from press line B were borderline or below their respective standards. MS grade panels from both press lines were below ANSI minimum edge SWR of 800 N, which could compromise the suitability of the product for RTA furniture fixed with screws.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.003 | 0.002 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".