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| Building a milling machine |
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| NormanV:
Thank you David. Andrew, I take your point about the extra spindle/column distance being useful but I am concerned about the rigidity or lack of it. I know that I will want more space at some time but I expect most of what I plan to do will fit within the available space with the table closer to the column. I have examined things a little more closely and it appears that I will not have to modify any parts, just rearrange them on the tube. The only drawback will be that the motor will protrude a long way out of the back, but if I position the machine in a corner it may not be obtrusive. As a last resort I can shorten the tube. |
| NormanV:
I have just stripped it down and reassembled it with the head pushed back. It almost fits. The casting marked A will have to be recast but with an overhang in the position shown by the arrow. In a way I am quite pleased as I am having withdrawal symptoms because I have not cast anything for a couple of weeks! |
| vtsteam:
It's getting exciting Norman! Won't be long now before you'fre making swarf. :clap: :clap: |
| PekkaNF:
It's looking very good. I'm sure you can produce some swarf with it. Try it out before painting, you find something to tinker with but after a little swarffing you know that you can do it. All machines have some limitations. Skill is that you can get the work done within those limits. If we really would make rigid enough machine, work envelope would be 100*100*150 mm, it would weight a ton and not fit into garage. You are doing some very good work here and it has some unique features. Pekka |
| NormanV:
Thank you Pekka, I doubt that I will paint it. It will need a lot of stripping down to do that and I quite like the look of bare aluminium. I made the new casting today. It came out better than most of my previous castings, I suppose that I must have learnt something about casting by now! For the first time I used some aluminium swarf and bits of can in the melt and when I poured it I found loads of crud at the bottom of the crucible. The top of the melt was quite clean, it only needed minimal scraping off. It poured well but there was all this stuff at the bottom. I won't be remelting swarf in the future. |
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