A component platform lock for holding a wind turbine blade component during attachment of the wind turbine blade component to a wind turbine blade shell part, the component platform lock comprising: - a housing , characterised in that the component platform lock further comprises: - a first moving pin comprising: - a first inner cone stud having a first diameter at a first section and a second diameter at a second section , the first diameter being larger than the second diameter, - a first collet having an expanding section surrounding the first inner cone stud and configured to move along the first inner cone stud between the second section and the first section, wherein the expanding section of the first collet will contract and expand based on the diameter of the cone stud, - a first actuator configured to move the first moving pin to obtain: - a contracted state wherein the first collet is located within the housing, and - an extended state wherein the first collet extends out of the housing, - a second actuator configured to move the first inner cone stud relative to the first collet to obtain: - a relaxed state wherein the expanding section of the first collet is retracted and surrounds the second section of the first inner cone stud having the second diameter, and - an expanded state wherein the expanding section of the first collet is expanded and surrounds the first section of the first inner cone stud having the first diameter and configured to engage and hold the wind turbine blade component. - a housing , characterised in that the component platform lock further comprises: - a first moving pin comprising: - a first inner cone stud having a first diameter at a first section and a second diameter at a second section , the first diameter being larger than the second diameter, - a first collet having an expanding section surrounding the first inner cone stud and configured to move along the first inner cone stud between the second section and the first section, wherein the expanding section of the first collet will contract and expand based on the diameter of the cone stud, - a first inner cone stud having a first diameter at a first section and a second diameter at a second section , the first diameter being larger than the second diameter, - a first collet having an expanding section surrounding the first inner cone stud and configured to move along the first inner cone stud between the second section and the first section, wherein the expanding section of the first collet will contract and expand based on the diameter of the cone stud, - a first actuator configured to move the first moving pin to obtain: - a contracted state wherein the first collet is located within the housing, and - an extended state wherein the first collet extends out of the housing, - a contracted state wherein the first collet is located within the housing, and - an extended state wherein the first collet extends out of the housing, - a second actuator configured to move the first inner cone stud relative to the first collet to obtain: - a relaxed state wherein the expanding section of the first collet is retracted and surrounds the second section of the first inner cone stud having the second diameter, and - an expanded state wherein the expanding section of the first collet is expanded and surrounds the first section of the first inner cone stud having the first diameter and configured to engage and hold the wind turbine blade component. - a relaxed state wherein the expanding section of the first collet is retracted and surrounds the second section of the first inner cone stud having the second diameter, and - an expanded state wherein the expanding section of the first collet is expanded and surrounds the first section of the first inner cone stud having the first diameter and configured to engage and hold the wind turbine blade component. <EOS>