A method of making a metal part assembly, the method comprising: - providing a first metal part and a second metal part wherein at least one of the first and second metal part comprises a metal panel; - providing an adhesive sheet having a first portion near a first end of the adhesive sheet and a second portion near a second end opposite to the first end of the adhesive sheet, the adhesive sheet comprising a thermosettable composition that comprises a mixture of a first and second epoxy compound and an epoxy curing agent, wherein the first epoxy compound has a weight average molecular weight of at least 1000 g/mol and has an amount of epoxy groups of between 5 and 10 mole% and the second epoxy compound has a weight average molecular weight of not more than 400 g/mol and wherein the weight ratio of first to second epoxy compound is between 0.8 and 4; - and wherein - the first metal part comprises a first metal panel having a first body portion and a first flange along a margin of the first body portion adjacent a first end of the first body portion; - the second metal part comprises a second metal panel having a second body portion and a second flange along a margin of the second body portion adjacent a second end of the second body portion; and wherein - the adhesive sheet is adhered to said first or second metal panel; - the first flange of the first panel is folded over said second flange of said second panel; whereby following adhering and folding a metal joint is obtained wherein the adhesive sheet is folded such that the first portion of the adhesive sheet is between the second flange of said second panel and said first body portion of said first panel and the second portion of the adhesive sheet is between said first flange of said first panel and said second flange of said second panel; - heating the metal joint so as to cause thermosetting of the thermosettable composition of the adhesive sheet. - providing a first metal part and a second metal part wherein at least one of the first and second metal part comprises a metal panel; - providing an adhesive sheet having a first portion near a first end of the adhesive sheet and a second portion near a second end opposite to the first end of the adhesive sheet, the adhesive sheet comprising a thermosettable composition that comprises a mixture of a first and second epoxy compound and an epoxy curing agent, wherein the first epoxy compound has a weight average molecular weight of at least 1000 g/mol and has an amount of epoxy groups of between 5 and 10 mole% and the second epoxy compound has a weight average molecular weight of not more than 400 g/mol and wherein the weight ratio of first to second epoxy compound is between 0.8 and 4; - and wherein - the first metal part comprises a first metal panel having a first body portion and a first flange along a margin of the first body portion adjacent a first end of the first body portion; - the second metal part comprises a second metal panel having a second body portion and a second flange along a margin of the second body portion adjacent a second end of the second body portion; and wherein - the adhesive sheet is adhered to said first or second metal panel; - the first flange of the first panel is folded over said second flange of said second panel; whereby following adhering and folding a metal joint is obtained wherein the adhesive sheet is folded such that the first portion of the adhesive sheet is between the second flange of said second panel and said first body portion of said first panel and the second portion of the adhesive sheet is between said first flange of said first panel and said second flange of said second panel; - heating the metal joint so as to cause thermosetting of the thermosettable composition of the adhesive sheet.