Right I am suffering from the typical noob welder blues, my welds are doing the job but sometimes blobby and I am currently using a flap wheel on my drill which number 1) is doing my head in and my ears as it is so loud and 2) a flap wheel is basically bits of sandpaper stuck onto a wheel, not the best thing for grinding through big ugly blobs of metal. Ideally I would get one of those angle grinder things with a nice heavy duty grinding wheel on it but that costs money so I am thinking would sanding with sandpaper say 40 grit work? It is mainly the big blobs causing the problem.