Chapter 3: Literature ReviewSr. No search on name1. Mohd Zaim Bin Din Experimental Study on Resistance of Spot Welder2. MI Khan, AK Pandey State of the art in modern resistance spot welding3. Nachimani Charde Investigation into the growth of spot welds on austenitic stainless steel4. Wings. Moarrefzadeh study of heat affected zones (HAZ) in resistance welding process5. DJ Radakovic Failure Modes of Resistance Spot Welding in Shear Tension Testing of Advanced High-Strength Automotive Steels3.1 Gap Identification: In the above research papers we found that resistance spot welding machine is very bulky, is subjected to a time-consuming welding cycle that does not join materials instantly, creates a larger thermal zone that takes longer to cool, and is susceptible to shear failure. It also doesn't weld to any corners, requires a proper foundation, and is expensive. 3.2 Objective: To create a welding machine which:-• can weld at any angle and at any height• is flexible• is less expensive• compact in size• provides ease of operation for the welder and• Less weight.• It is portable• Does not require a base rigid.Chapter 4: Design and Modeling4.1 Equipment Components• 17 gauge copper wire for primary winding• Fiberglass coated aluminum for secondary windings• Step-down transformer • Electrode • Brass electrode clamp • Switches limit switches • Molding (plates) • Wooden casing • Nut • Cable for main power supply4.2 General equation used in spot welding The shear strength of a single spot weld can be calculated as follows: τ = 2 ,6 • t • d • RmWhere:τ = shear strength, N t = sheet metal thickness, mm d = weld diameter, mmRm = tensile strength of the material, MPaThe electrodes indent at least slightly onto the surface of the workpiece. ... half of paper ...... runs well and weighs almost 200 pounds. In this project we have eliminated the above mentioned problems by creating a much simpler, lighter, portable, compact and flexible machine capable for welding at any angle and can easily be used by a less experienced worker with much ease and precision required. The advantages of our equipment are as follows:-• Welding at any angle, at any height• Provide flexibility• Less expensive• Compact• Provide ease of use for welding and• Less weight.We conclude that our machine can be mass produced and can also be used for industrial purposes.Chapter 8: References1. Miller Manual.2. Welding Technology by OP Khanna.3. Ruukki resistance welding manual.4. PNRAO production technology.5. https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcRCMnoU86VE2WfmswJJNcQ6o_cOokYxVwUQaCR4AwlEJavqXa4_6. Research paper