Problem $1(30$ points$)$

Develop a build time model for Stratasys $J5$ DentaJet Poly Jet machine for dental parts as shown below. The build speed for this machine in HQ mode is $120m\frac{m}{s}.$ Layer thickness in HQ mode is $18$ microns. Print head width is $50mm.$ Consider that the jefting head can print material during each traversal of the build area and $2$ passes of the head are required to fully cover the total build area. Assume that a delay of $15$ seconds is required for cleaning the heads every $25$ layers. Using your build time model, compute the build time for a layer of the denture part shown below.

Known: Platform length $=140mm.$

Platform width $=200mm$

Print head width $=50mm$

Height of printed parts $=30mm$