ITI Mechanic Auto Body Painting (AITT Theory) case studies
ITI Mechanic Auto Body Painting (AITT Theory) · Put your knowledge to work in context.
The ITI Mechanic Auto Body Painting (AITT Theory) is the theory paper of the All India Trade Test for trainees who have completed the Mechanic Auto Body Painting trade under the Craftsman Training Scheme at an Industrial Training Institute. It is written for apprentices and ITI trainees who have finished workshop instruction in refinishing and now need to demonstrate that they understand the underlying principles, not just the hand skills. The ITI Mechanic Auto Body Painting (AITT Theory) case studies are 5 cases and about 3,928 words.
1Isocyanate clearcoat in a borrowed bay
The main spray booth is out of service for two days waiting on a fan motor, and a regular customer's 2018 dual-cab ute is booked for a clearcoat blow-in on the left rear quarter and rear door. The only free space is the general workshop bay, which has a roller door, a dust extractor rated for grinding dust, and no filtered supply air.
664 words, about 3 min2Flaking bumper cover around a parking sensor
A 2020 SUV arrives with the rear bumper cover flaking around the left parking sensor. The paint has lifted in a rough circle about 200 mm across, the edge can be lifted with a blade, and there are two fine cracks radiating from the sensor hole.
793 words, about 4 min3Three-stage pearl white that matched under fluorescent light
A 2019 sedan has had the right front door skin replaced after a side impact. The colour is a three-stage pearl white: white base, pearl midcoat, clear.
802 words, about 4 min4Sixty hail dents, one roof brace
A 2016 hatchback has about 60 hail dents on the roof, ranging from 10 mm shallow dimples to 30 mm sharp-edged craters. About a dozen sit along the rear roof edge close to the hatch opening, and several are directly over the roof brace, which cannot be reached from underneath because of the headliner and sunroof cassette.
822 words, about 4 min5Fish eyes, a run and two dull patches on one bonnet
A bonnet is refinished in a 2K base/clear system. After a 30-minute bake at 60°C the painter finds about a dozen crater-like fish eyes clustered in the centre of the bonnet, a 60 mm clearcoat run along the left edge, and two dull grey patches on the right side that look dry but feel slightly soft.
847 words, about 4 min