Editing Double-shot moulding (section)

===Disadvantages===
*Cost and availability: the process of building moulds for each and every legend is an expensive process compared to making one mould per row profile and adding the legends afterwards on demand, especially considering manufacture for the wider international market where even simple letters such as "A" move between row profiles (e.g. '''Q'''WERTY vs '''A'''ZERTY, QWERT'''Y''' vs QWERT'''Z''').
*Single colour: typical double-shot processes restrict the keycap to a single legend colour, although it is possible to inject further colours and this has been done.
*Typeface limitations: double-shot moulding cannot provide the sharp corners that are present in most typefaces, which poses a minor limitation on the typography of legends
*Gloss and yellowing: Double-shot keycaps are typically manufactured from [[ABS]] plastic. ABS may yellow over time, and it is not as hard as [[PBT]] plastic. The texture of PBT keycaps will remain longer than the texture of ABS keycaps: ABS keycaps become glossy with use. Because of this, PBT keys with [[Keycap_printing#Dye_sublimation|dye sublimated]] legends are regarded by many as an even better alternative, although dye sublimation has its own set of disadvantages and limitations, most notably that it cannot be used to print light legends onto dark keycaps. PBT double-shots are now in available, using a non-PBT plastic for the first shot.