The new air assist setup consists of a valve controlled by the laser cutter hardware. It is now a binary system with either very little air coming out of the nozzle [If Blowing=No] or all the air coming out of the laser nozzle [If Blowing=Yes].
[If Blowing=No] means there’s just enough air blowing through to keep the smoke out of the nozzle and off the laser lens. Smoke on the laser lens is bad and would lead to cracking the lens eventually. This setting is suggested for engraving but I haven’t seen any difference on the wood cutting that I do. Possibly it would be better for acrylic.
[If Blowing=Yes] is great for cutting. It adds oxygen to the cut. It blows smoke out of the way of the laser beam. And it prevents flare-ups on material prone to that. I’ve been able to increase cutting speeds by 40% after replacing our old, tired air pump. FYI The above image shows my settings for cutting 1/8" baltic birch plywood.
tl:dr Like @brian.adams said, the new air assist setup will be the same as before if you set the “If Blowing” Setting to yes. The laser cutter hardware will turn on air assist automatically. You’ll have to adjust your setting for the new air pump. The old air pump was slowly dying so I don’t think we noticed over the years.
Thanks for reading,