Cylinder Casting of the Atlantic “Make- and-Break” Marine Engine
Bibliographic record
Abstract
The Atlantic “Make-and-Break” Marine Engine was one of the first engines to be mass produced on the Canadian Atlantic coast, and it quickly revolutionized the fishing industry in that area. The Apprentices of Pappalardo lab began a project to make a replica of one of these engines in 2016 to so that they could gain a deeper understanding of sandcasting and how this engine was fabricated. This thesis is a continuation of that project. Students have been fabricating parts for the engine since 2016, and as of Fall 2024 there was one part left to cast: the cylinder. This thesis covers 3 attempts at casting the cylinder for this engine. I will explain the previous work done to cast this part and what I modified from the previous work to make the part easier to cast. I will explain the failure modes that I experienced from the pours, the ways they can be mitigated in the future, and lessons learned for future attempts to cast this cylinder.
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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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
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".