Sounds like grinder work to me. All in all since the grinding wheel is flat it's not all that hard to control keeping the surface flat. Finish it off with a file maybe 20 min. per sidebut I've been working on it for about 8 hours total, and I don't even have one side cut off yet,
Willis, I did the same thing to the chassis of an unpowered BLI E7B, which was the same as the powered unit. The darn thing weighed as much as a total train. A Dremel just didn't have the moxey, so I used my side grinder. I wanted to preserve the speaker molds and found it easy to control the grinder enough to not damage them by simply easing it onto the metal and not tryiing to take off too much at once. Filling took care of the jagged edges and all came out well. Should work for most any larger rough-in workWhile I don't actually recommend it (unless you are used to using it) I use a 4-1/2 inch hand grinder and finish off with a 10 or 12 inch bastard file. A flat surface and tolerance of 0.01 mm overall can be obtained with cross trace filing but don't be in a hurry. Actually I don't come close to that when grinding the tanks off the U33C frames when building the C630M's
Willis![]()
I was wondering that myself.Thanks Grande Guy (think about it, do we got Grande Twins here?)
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