# Reflow Oven After placing surface-mount parts on boards either by hand or using the [CSM84](../csm84/), the next step is to melt all the solder paste in a reflow oven causing all the joints to be soldered simultaneously. Our current oven is a T-962A IR oven modified with open source firmware and a number of hardware upgrades. While it's been fine so far, on the advice of friends with more experience doing this, we're currently gathering the parts to build a better reflow oven, and will document it here as we proceed.