>=20 > I can't see a reason for doing the back-off. The situation you describe a= bove > will create chemical traps for the etchant, which are a definite no-no, a= s > that will likely create problems with corrosion further down the line, as= well > as any over-etch problems that may exist. Yes, which is why it (Designspark) doesn't do the backoff for a pad/track i= f=20 the backoff rule is violated for that track/pad. In this case it will have = the=20 same efect as plotting with 'Fill Pads' switched on. When I do my home etch= ed=20 boards I always have the 'Fill Pads' switched on anyway. Come to think of i= t, I=20 also have pads filled when I plot the gerber files for the board manufactur= er.=20 The DRC for drill backoff can be switched off. /Ruben =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Ruben J=F6nsson AB Liros Electronic Box 9124 200 39 Malm=F6 Sweden www.liros.se Tel +46 40142078 =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .