This document provides a summary of Fernando Contreras' experience as a mold and tool designer, mold and die maker, and tool room supervisor. It includes his education and professional experience working for various companies designing, fabricating, repairing, and maintaining molds, dies, and tools since 1984. His roles and responsibilities involved all aspects of tool design, fabrication, maintenance, and implementation of quality systems. Key accomplishments highlighted efficient repairs that saved customers costs and allowed projects to be completed on time.

1. Fernando Contreras
9257 Raúl Garza, Cd. Juarez, Chih. 32650
Home: 6199629 Movil656 6437407
fer_contreras_aguilera64@hotmail.com
SUMMARY
Mold and tool designer / Mold and die maker, Tool room supervisor,
EDUCATION / TRAINING
Bachelor degree in mathematics CBTIS 1281983Unigraphics mold Wizard PLM
Refrigeration, electricity and toolmaker technician1983 Chicago
Cd, Juarez Mexico
CNC programming (Community College) 1995 GD&T (Community College) 1995
El Paso Tx.
Unigraphics post processor (Unix solution) 2003 Mexico DF.
Green Belt 2004 Cd. Juarez Mexico
PROFESSIONAL EXPERIENCE
Tool and mold designer 1/2011 to Present
Responsible to all design and fabrication aspects of tools requested to me for a local machine
shops
That servicers depending of the job, can be design, fabrication, reparation, modification or
tooling update drawings only.
I use depending of the tools or jobs provide to me: mold wizard of unigraphics, mold flow
analysis, another kind of simulator, CNC programming
Most of the time I order specialized parts like punches, matrixes, hot runners, heater, core pins,
slides, lifters, sleeves, plungers, retainers, cylinders, racks, pinions, sensors, switches, cam
actions, relays, die sets, mold sets, ejector, accelerator ,etc.
And materials too!! , like edm electrodes, Wire, cooper, aluminum, steels ( mold,die and tool
steels)
In every job that I accepted I always provide to my customer fabrication support.
Latest accomplishments:
Repair a large 4 cavity complete damage or destroyed mold (40 tons) Built in a solid
block, without any drawings or reference points, this job allowed to tooling die of Mexico
recover 50,000 usdwho was detained for almost a year.
Repair a welded cavities for a Battery cover , the welded area cannot be texturized
properly due to a different materials between steel base and electrode used when was
reworked ,after that , they call me to see the problem, then I checked the cavity steel
and called to Bholer to request the proper electrode bar , after applied both cavities

2. was reworked and texturing . allowed to Tooling die recover 24,000 usd who was detained
for almost 3 months
Design 7 stamping progressivedies, in a record time tomaquinados HB, this job allowed to
the owner to maintain his customer.
Adapt new hot runner system in a stack mold, because the original was damage and
cannot be repaired because are obsolete, and the fabrication company was no longer , this
job allowed to Century mold achieve his production goals, I was outsourced by GM tools.
Insert broken slide to avoid makingnew one, they save 22,000 dollars, this job was made
for century mold and the local shop to fabricate the insert was Plastic and stamping
solutions.
Delphi Thermal Systems 10/2007 to1/2011
Cd. Juarez
ToolingandMethods Engineer.
Responsible of:
Molding and stamping presses andher equipment, planning, made and validate any engineering
change,validate repaired, modified ornew tools some ones in Mexico, USA.And South Korea,
bought mold and die spare parts, components, materials, tool room and maintenance
consumables, trained tool room and maintenancepersonal; designed and fabricate any tool
required to improve the production rate or safety,generate all documents requiredfor the PCP.
Like HVP’s,PFMAS, DFMAS, PPAPS, generate and implement maintenance programs, improve
tool room quality, reduce down time and scrap levels,transferred and implemented processes
either from development or from another manufacturing facility, reviewed all tool designs with
the designers to find any problem or interference before to send to manufactured.
Accomplishments:
Refurbish a complete destroyed stamping pressarrived from Donchery France, inhome.
Refurbish a complete stamping press arrived from New York Plant,this machine was sent to
Oak Company.
Validate in KDAC (Delphi Korea) 6 progressive stamping dies for 58 mm evaporators for
Mexico and Poland in only 15 days, this action allowed to our division tolaunch the product
on time.
Validate 16 plastic injection moldsfor GMplatform, in only a month.

3. Dynamic Plastics 1/2006 to10/2007
Cd. Juarez
Tool room Supervisor
Responsible of:
Supervised all tool room technicians, maintained thetool roomjobs schedule,
bought all tool room consumables, and specialized tools and parts , maintained all tool room
equipment.
Designed and fabricated any tool that the plant needs to improve his production or his safety.
Maintained proper inventory of many specialized parts for plastic injection molds and his hot
runners
Maintained all plastic injection molds, made all engineering changes, validated and
implemented according with his quality systems, Validated abroad some new plastic injection
molds like China, and Portugal, Supervised all hot runner repaired in house
Generated tooling inspection report, check list, Process Control Plan, Papp’s and all involved
documents Requested by the quality systems.
My principal challenge in this company was to maintain properly molds with a lot kind of surface
finishes. Most of the molds was for television (fronts, panel and backs) the biggest was 45 tons
with mold master hot runner and some valve gates.
Accomplishments:
Reduce scrap levels to 3% , from 16%
Reduce the changeover to only 45 minutes from 6 hours. (SMED technical)
Maintain molds properly with only 2 technicians by shift.
DELPHI MTC 4/2000 to 12/2005
Tooling Engineer, Tool room supervisor
Cd. Juarez.
Responsible of:
Supervised mold makers and tool designers, designed and fabricated new plastic injection
molds for automotive sensor’s most of them are over mold, bought any necessary tools and
items to use in a mold construction, generated any program for the machining centers, WEDM,
and any CNC machine that we need to use for a mold fabrication, with unigraphics cam.
develop a SLS way to make rapid prototype injection molds,Standardized all plastic injection
molds using Master unit dies (MUD)
Accomplishments:
Made a new mold every 4 weeks
Made a proper team to made mold in home
Used Unigraphicscam to programming al CNC equipment from my computer.
Design mold with solid edge, and unigraphics mold wizard.
Learn and develop stereo lithography process with steel for prototype molds.
Work properly with many people for other countries.

4. PlasticosSotec/ Proctor Silex9/1992 to 2/2000
Juarez
Tooling General Supervisor
responsible of:
Maintained in proper conditions all stamping dies, plastic injection molds, thermo set injection
molds, and aluminum injection over molds. Made all change of engineering request in the plant.
Make all repairs of any damage tool, sometimes I used external machine shops
Maintained proper inventory of many specialized parts for stamping dies and injection molds.
Supervised all tool room personnel about 24 mold makers and two designers
Maintained thetool room jobs schedule. Bought all tool room consumables, specialized tools
accessories or parts
Maintained all tool room equipment. Design and fabricate any tool that plant needs to improve
his production or his safety. Implement maintenance programs for stamping dies and injection
molds
Training all involved people in plastic molds maintenance, repair methods and fabrication.
Made spare part and completemolds in house.Coordinate all tool room jobs in four shifts.
Designed and built any fixture for secondary operations needed to make in the plastic parts,
Repaired and maintained ultrasonic and compression plastic welding machines
Repaired and maintenance of casting aluminum dies, and refurbish his surface finish.
Accomplishments:
Design and fabricate many mold during normal working time
Always launch new products on time.
Hire all tool room personal
Reduced the expenseson external machine shops in more of 2000 usd by year.
General Instruments 1984 /1990

5. Mold Maker
Responsible of:
Designed and fabricated plastic injection molds, some molds were made for some different
colors. Some of they was used a pure form molds andover mold, and some was molded in a
double cannon machine. They was used for IBM key board and night vision switches
Designed and fabricated some single kinds of stamping dies.
Bought any tool, equipment or component that I need it to repair the molds from production.
Followed all jobs schedule that the supervisor gave to me.
Make any repair that the molds needed where were running.
Accomplishments:
Design and built many mold in Master unit dies
Learn to use mechanical design (Autocad.13)
Learn to use EDM sinker
Learn over mold technologies
Great experience in machining, design and implementation of maintenance plans
Tools validation, troubleshooting and technicians supervising.