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| First mini lathe project, oscillating steam engine. |
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| doubleboost:
Hi Ross Well done :thumbup: :worthless: Every time you do something you learn a little bit more John |
| Dean W:
--- Quote from: doubleboost on February 19, 2012, 05:40:49 PM ---Hi Ross :worthless: --- End quote --- Don't quite understand this. He's put pics in almost every post! Doing great, Ross! Keep at it. |
| arnoldb:
Hi Ross :thumbup: Your doing a fine job; just take it a bit at the time and you'll soon have a runner :D --- Quote ---In heinsight I should've drilled the hole for the cylinder port before drilling the bore. It'll leave a burr when I do, but I've made a little makeshift honing tool which should clean it all up a treat hopefully. --- End quote --- Kudos to you for thinking through things like that :thumbup: - you'll find thinking about things a bit on future projects one of the best tools in your shop, but it does come with a bit of "learning the hard way" :) The burrs are a problem either way; if you did the port first, it's very likely that the boring operation on the cylinder would leave a burr in the port - slightly blocking it. That then has to be cleaned up by running a drill through, and in my limited experience will bend over a bit of the burr into the cylinder again - requiring a bit of a lap or run-trough with a reamer again. Either way in my experience, you need to fine-finish the bore of the cylinder as a last operation. Don't worry about this too much for your first engine though :thumbup: - once the bug has bitten you and you build more engines, you'll naturally start thinking about these kinds of issues. The main thing is that you take every bit that you learn and try and apply that later - sometimes its frustrating, and at other exhilarating - but either way its a load of fun :ddb: :beer:, Arnold |
| doubleboost:
--- Quote from: Dean W on February 19, 2012, 08:23:35 PM --- --- Quote from: doubleboost on February 19, 2012, 05:40:49 PM ---Hi Ross :worthless: --- End quote --- Don't quite understand this. He's put pics in almost every post! Doing great, Ross! Keep at it. --- End quote --- Sorry i clicked the wrong icon (be the wine) Pictures are great by the way John |
| Ross:
Just another update, I drilled the port hole through on the cylinder. Somehow it is out and to the left by 0.7mm :doh: so I opened the hole out a little with a centre drill, and worst case I can move the port holes on the plate that the cylinder will sit on across 0.7mm. I double checked the measurements by touching on with the drill first and all seemed well, but these things happen I suppose! I de-blurred the bore of the cylinder with my little homemade honing/lapping tool on the drill it worked brilliantly, so I'm happy with the finish inside the bore. I'll try and find the time to machine the cap for the end of the cylinder this week, I just want to get this part done before no more mistakes happen!! |
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