Printer Design & Reverse Engineering

Hi, I need an industry freelancer experienced in Mechanical engineering, rapid prototyping, reverse engineering, and printing technologies to provide the following together with your past portfolios : Enhance design of existing commercial 3D printer which has the current parts : - main chassis + logic chip - toolheads - material holders (catridges) - material holder tips - printing tray - piston - Motor - belts, cables and hex sets Deliverables : - Breakdown and describe all existing parts in use including provision of 3D design models (editable CAD files) in a common design software (SolidWorks, AutoCAD, etc). - Breakdown and describe all existing parts in use including provision of 2D manufacturing models (editable CAD files) in a common design software (SolidWorks, AutoCAD, etc). - Technical writeup using MS Word documentation of all drawings/views of assembled machine + individual parts components stating description, design rational, dimensions, weight, list of different materials proposed and rational (for new items) and currently used (for current hardware and software). - Provide editable STL & STEP files for complete system and individual components. To Include Enhancements : - Upgrade to have 3 x metallic catridges/nozzles and 3 x plastic catridges/nozzles. - Metallic nozzles to have heating implement at its tip to enable heating of ingredients passing through it. Heating temperature is adjustable by software or switch on chassis. - Design of 10 different sizes of nozzle tip holes for both metallic and plastic nozzles (from 1mm to 5mm). - Chassis dimensions may remain the same but allow for heights of up to 50cm for printing of tall products. - Add removal flat printing tray (pan shaped with handle) of about 5mm that sits on top of actual printing tray. - Washing implement for washing all detachable components (metallic and plastic catridges/nozzles, tubings etc). - Selection and Programming of open source 3D printing software to fit customized machine. Payment : 25% released upon completion of technical writeup, 50% milestone released upon completion and handover of all deliverables, remaining 25% milestone released upon manufacturer confirmation that designed parts are production ready and interoperable as per submitted designs. This should take about 2-3 weeks or less. References : Existing product 1 : [login to view URL] Existing product 2 : [login to view URL] Videos : [login to view URL] Videos : [login to view URL] References - General knowledge about 3D Printers : - [login to view URL] - [login to view URL] Thanks.