Sitting here using big thunder and not getting any success! I have speed at 12 and max power at 70 & min power at 70 as well to cut through the plywood. It cuts through on some parts but not consistently throughout.
Bug Thunder is underperforming and needs the tube replaced, there should be a sign taped to the front warning about poor cutting (if not, could you please add one). I’m not sure it can cut 1/4" plywood at the moment.