Purchased for the production of wood deck of 20 mm thickness with rib material. Whether the hardness of the steel is not good or the hardness of the plate, it is not possible to process as many as 50 holes, and the smoke has risen. You should mention replacement blades from the beginning or refer to permissible durability as a reference.
Traditionally, drill holes and dishworking were very good, finishing with a separate cutter with a single cut. In the case of wood deck, the number of screws is close to one thousand depending on the area. Mandatory item!