I had some used carbide milling cutters 2mm diameter, and I was prepared to sacrifice one or two of them. Next day, with a fresh determination, I decided to attack the problem again. So I decided that the three remaining bolts would have to be enough. I briefly considered drilling a hole from the other end, and punching in the reverse direction, but that would really have compromised the pump. I tried to break up the embedded tap, using a HSS punch, with partial but inadequate success. I tried to grasp with pliers the fragment still protruding but it then broke below the surface. The hole being threaded was one of 4 to be used to hold a water pump to the air pump. In a previous post I admitted to breaking a BA7 tap in the Edwards air pump of the Triple Expansion Engine, and being unable to remove it. What is particularly exciting in Chris’s “Clicksping” is that he is soon to embark on remaking an Antikythera calculator. For some reason I cannot cut and paste his Youtube connection, but you will find it by doing a search on “Clickspring”. Mainly with a clock making interest, but the techniques can be used by all of us. An Australian machinist, whose videos and machining techniques have to be seen to be believed. The second, I have probably mentioned before. Look at his video on machining ultrathin materials. Aimed mainly at an audience who are beyond absolute beginners. His techniques and teaching are really, very, excellent. The first is by Joe Pieczynski, who is a Texan who makes his living from machining. The other thing that I wanted to mention, is a superb machining blog site. The first tiny container, contained, you guessed it, the drag links.!! They were smaller than I remembered. The drag links could not be them because they are too big, aren’t they….? There were some tiny containers with tiny fasteners in the compartmented box. I knew that it was a waste of time, but I was seriously considering making a new lot of drag links and bearings, probably a 2 day task. So I searched the multi compartmented box for the 21st time. Next day was going to be hot, so at 7am I drove to the workshop (it is about 15km from home), and searched again. (OK, I did not actually clean the bedroom and living room, but I did search). So I cleaned and searched my car, my bedroom, the living room, every where that I could concievably have left them. So I tidied the workshop, putting tools away, sweeping up rubbish, all the while searching. Could I have put them down somewhere else in the workshop? So I searched the workshop. Despite thoroughly searching the box, at least 20 times, they were not there. I had made them in early December, and I was sure that I had put them in the multi- compartmented box where I store all such bits. Then the day before yesterday, I could not find the drag links for my triple. Unfortunately, I lost a day having to get a dental root canal abcess reamed out. always a really interesting place to visit.Īnother full day in the workshop would have just about had the triple in the display. Plus the Vintage Engine group has many full size engines running…. GSMEE (Geelong Society of Model and Experimental Engineers) has a display in the Vintage Machinery Shed at the show, with many small working steam engines and the odd IC engine running. Today was my deadline to have the triple expansion steam engine assembled and working, ready to be hooked up to steam at the Geelong Truck show. I think that I will stay in the workshop. Unfortunately there was insufficient material to make a long section, machine it, then cut it up, so each tool holder will have to be made separately. I have cut up the remains into rectangular 30x80x40mm chunks and will make the tool holders in the next couple of days, SWMBO and weather permitting. I bought the grinder table cheaply (($AUD20 from memory) and have been gradually canibalising it over the last couple of years. The material is high quality cast iron off a scrapped T&C grinder. I have 5, but have material to make another 10. Pics will follow.Īnd I really need some extra tool holders for the CNC lathe. So I have drawn up plans for a new chuck which I will fit to the lathe spindle and use the CNC to make the ER40 taper and threads. Plus it sticks out of the headstock a bit excessively. The ER40 chuck which I am currently using has an M5 shaft which is held with a drawbar, so I cannot feed work through the lathe spindle. Meanwhile, I am making some extra tool holders for the CNC lathe, and another ER40 chuck for the CNC lathe. Maybe not.įor those following my triple expansion steam model engine build, I have put it aside again. Video of the big triple expansion engine working. That would have been set at intitial installation, and probably never altered since then. And note the drag links in the adjustable block.
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