Memorandum
To: Jill Skelton, Supervisor, Chemical Products Division
From: Buddy McCormick, Research Technician, Chemical Products Division
Date: November 12, 1999
Re: Progress Report—Mold Design Project, Tests 1 and 2
CC: Robin Lakoff, Supervisor, Quality Control OverviewOver the past month, we have concentrated on designing molds for the new “Instant Styrofoam” product that is being developed by the Chemical Products Division. We have so far determined that (1) bolts work better than C-clamps as mold fasteners, (2) aluminum is not satisfactory as a material for the molds, and (3) one steel mold design that we tested will not work. We are currently trying to develop another steel mold design which will accommodate the high pressure “Instant Styrofoam” creates as it cures.
This memo will acquaint you with what we have accomplished to date and what we plan to do in order to complete the project.
Work Accomplished
Test 1: Clamping Aluminum Molds
We discovered that standard C-clamps are unsatisfactory, requiring considerable time for opening and closing. We switched to the quick-action-type clamping devices, which did hold the mold closed but which resulted in damage to the molds (the pressure of the foam warped the aluminum plates). Thus, we have eliminated aluminum as a possible material for the molds. (See Appendix A for test results).
Test 2: Bolting Steel Molds
A prototype mold fastened with bolts and made of 1.25 cm cold-rolled steel plate was constructed and, after one redesign, successfully tested. The first attempt at molding a part resulted in blowing the hinges off the end of the mold. We replaced the hinges and doubled up on the bolts in making a second mold. However, curing pressure caused the plates to deflect 1.25 cm—an unacceptable deviation.
Work Remaining
Test 3: Steel Mold Design
We would like to continue testing steel molds, to determine whether thicker steel or welded brackets will best stiffen the mold to reduce deflection to within tolerances. We then need to modify the prototype and conduct tests to verify the new design.
Recommendation
Our team will complete Test #3 within two weeks if you can schedule us to work on it exclusively.
Discussion Questions
- This memo is an obvious improvement over Memos 1 and 2. But what features make it better?
- What has Buddy done (finally) to make this memo more professional?
- How is the tone different from Memo 2?
- Will Buddy keep his job?
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