Eurocircuits creates the Solder Paste data
If no Solder Paste data is supplied but a Stencil is ordered then Eurocircuits will create the Solder Paste data based on the available PCB layout data, using a combination of the copper layout and the overlaying soldermask.
We use the FLASHED pads from the copper layer that are totally free of soldermask and are not drilled. In addition, we class resin filled Vias as not drilled, this is because after plating they are a copper pad on the outer layer.
Of course our simple rule to create this data and the actual stencil relies totally on the quality of the data supplied. For example, if the copper layer pads are drawn or presented as contours, then it is next to impossible to perform this function.
If the design contains Soldermask Defined Pads, then the creation of Solder Paste data by us is not advisable as we will lack the information to do so properly.
However, if you are have concerns about the correct creation of the Solder Paste data, you can always launch your order to include a Pre-Production Approval stop, this will allow you to review all the data before your order goes into production.
Read all about our the Pre-Production Approval (PPA) functionality here.