A method of manufacturing a wind turbine blade by joining a tip section of the blade and a mainboard section of the blade at a joining section, wherein - the tip section comprises a first aerodynamic shell with a first load-carrying principal laminate integrated in the first aerodynamic shell, and - the mainboard section comprising a second aerodynamic shell with a second load-carrying principal laminate integrated in the second aerodynamic shell, wherein - the joining section is formed at a first end of the tip section and a second end of the mainboard section, wherein the method comprises the steps of: a) forming the tip section such that the first load-carrying principal laminate includes a first recess at the first end of the tip section, the first recess comprising a first taper section where a thickness of the first load-carrying principal laminate is tapered in thickness towards the first end of the tip section, b) forming the mainboard section such that the second load-carrying principal laminate includes a second recess at the second end of the mainboard section, the second recess comprising a second taper section where a thickness of the second load-carrying principal laminate is tapered in thickness towards the second end of the mainboard section, c) positioning the tip section and the mainboard section in longitudinal extension of each other such that the first recess and the second recess are aligned with each other at the joining section, d) arranging a first layup in the first recess and the second recess and e) joining said first layup to the first recess and the second recess such that a first scarf joint is formed between the first layup and the first taper section and the second taper section, characterized in that joining step e) comprises wetting a fibre material with resin and curing said resin, said fibre material being dry fibre material infused with resin in an infusion process, such as a vacuum assisted infusion process. - the tip section comprises a first aerodynamic shell with a first load-carrying principal laminate integrated in the first aerodynamic shell, and - the mainboard section comprising a second aerodynamic shell with a second load-carrying principal laminate integrated in the second aerodynamic shell, wherein - the joining section is formed at a first end of the tip section and a second end of the mainboard section, wherein the method comprises the steps of: a) forming the tip section such that the first load-carrying principal laminate includes a first recess at the first end of the tip section, the first recess comprising a first taper section where a thickness of the first load-carrying principal laminate is tapered in thickness towards the first end of the tip section, b) forming the mainboard section such that the second load-carrying principal laminate includes a second recess at the second end of the mainboard section, the second recess comprising a second taper section where a thickness of the second load-carrying principal laminate is tapered in thickness towards the second end of the mainboard section, c) positioning the tip section and the mainboard section in longitudinal extension of each other such that the first recess and the second recess are aligned with each other at the joining section, d) arranging a first layup in the first recess and the second recess and e) joining said first layup to the first recess and the second recess such that a first scarf joint is formed between the first layup and the first taper section and the second taper section, characterized in that joining step e) comprises wetting a fibre material with resin and curing said resin, said fibre material being dry fibre material infused with resin in an infusion process, such as a vacuum assisted infusion process. a) forming the tip section such that the first load-carrying principal laminate includes a first recess at the first end of the tip section, the first recess comprising a first taper section where a thickness of the first load-carrying principal laminate is tapered in thickness towards the first end of the tip section, b) forming the mainboard section such that the second load-carrying principal laminate includes a second recess at the second end of the mainboard section, the second recess comprising a second taper section where a thickness of the second load-carrying principal laminate is tapered in thickness towards the second end of the mainboard section, c) positioning the tip section and the mainboard section in longitudinal extension of each other such that the first recess and the second recess are aligned with each other at the joining section, d) arranging a first layup in the first recess and the second recess and e) joining said first layup to the first recess and the second recess such that a first scarf joint is formed between the first layup and the first taper section and the second taper section, characterized in that joining step e) comprises wetting a fibre material with resin and curing said resin, said fibre material being dry fibre material infused with resin in an infusion process, such as a vacuum assisted infusion process.