01a. Techno-Isel Milling

Machine: Techno-Isel

End Mill: 1/4″, HSS, Down-Cutting, Double Fluted

Cut Speed: 50 inches/min

Plunge Speed: 20 inches/min

Jog Speed: 240 inches/mi

This end mill was pulled from the Techno-Isel CNC after running a job where it became hot enough during operation that it started a fire in the sacrificial board, plywood, and vacuum table underlayment. Examination of the 1/4″ end mill reveals flutes that are clogged with baked on material, causing a bit which was both dull and had two chipped cutting heads, to run even hotter. In hindsight, this bit should have never been used. Earlier in the day, jobs run with this end mill had tolerance issues related to the fact that the bit wasn’t worn down enough to not be dimensionally accurate. This issue showed up with other end mills as well. It would be good practice to take calipers to the bit before using it.

4.196 Special Problems in Architectural Design Complete Fabrications Nick Gelpi Mon-Fri, Jan 5-7, 10-11, 13-14, 18, 20-21, 24-25, 27-28, 01-04:00pm, 3-402/7-432studio, 1st mtg Wed 1/5 Pre-register on WebSIS and attend first class. No listeners Prereq: Permission of instructor ; Yr-1 MArch students who have completed 4.123 only Level: H 9 units Standard A - F Grading Can be repeated for credit Lab Fee: 150 A comprehensive introduction to methods of “making” explored through a wide range of brief but focused exercises. Skills = developing complex geometries from flat components; fine-tuning press fit construction, molding and casting, and making repeatable molds for customization. A two-part workshop, the first half will contextualize contemporary tools and techniques within the trajectories of historical case studies of building, combined with hands on familiarization of tools. The second half will implement the tools of our workshop in the context of Design. Working on group design build process for three MIT 150 FAST installations, students will test and influencing designs through the instrumentality of production. These hands-on design build projects are intended to produce reciprocity between skills and design, making more complete the problems of fabrication. Subject limited to year-one MArch students who have completed core-1 studio. Contact: Nick Gelpi, 9-224, 253-9415, ngelpi@mit.edu -

COMPLETE FABRICATION