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Hello Mosey, The tool that I posted in Figure 3 above would work well if you used a small TNR (.008"). For small diameter turning a part like a valve stem or any similar type of part where deflection is an issue, set the left side of the tool bit or its side cutting edge angle at right angles...

Hello Antman, In an earlier post in this thread you mentioned that you didn't understand why a tool nose radius was necessary on your lathe tools. It is a very important part of the tool and greatly influences the surface finish on the work as well as the strength of the tool point and the life...

Hello, You would not be able to use the power down feed in the mill's present state. The parts are available on eBay and from several sources new and reproduction. I just wonder if this is indicative of the condition of the rest of the mill. Here are some sources for reproduction replacement...

Hello All, When I was old enough to go to my Uncle's machine shop with my Dad to watch and eventually help when they worked on the racing engines for his hydroplanes, I was gradually introduced to all of the technical terms and shop jargon at an early age. There was one term that initially...

Hello Bill, Wonderful job. It is amazing how it has all of the running characteristics of the full size engine as well. Thanks for documenting your build. Congratulations on a superb model. Kind regards, Mike

Hello Chuck, If you would like to build your own indexing and dividing head, a real nice one was published inThe Home Shop Machinist magazine back in 1988 by Philip Duclos. It was reprinted in The Shop Wisdom of Philip Duclos as well. Here are the issues: "Model Maker's Dividing Head" Part 1...

Hello All, When I first started to put my home shop together back in the mid 1980's I started with a worn out South Bend 10K lathe which I refurbished. Once that was operational, I really wanted a milling machine, but back then there were not many choices for a 20-something year-old on an...

Hello, For anyone who may be interested in building a model of the Musgrave Non-Dead Center Engine and was frustrated by the lack of internal steam porting details in Paul Jacob's plans which were published in 'Steam & Stirling Book 2', there was a series of articles published in Model Engineer...

Hello, Are you sure that it is used for drill bits? I remember using a Weldon relieving fixture like this for sharpening taps and counter sinks many years ago in a tool room where I worked. Unfortunately, it was more than 20 years ago and I don't have any notes or information about it anymore...

Hello Bez, Not sure what they may be. They may be something made for a specific job or not related to the tool at all. I have attached the Starrett Tools catalog pages of their No.665 Series Inspection Holder & Accessories. I have this tool and the only accessories that are related to the...

Hello, It is just a heavy-duty dial indicator and base that is often used in an inspection department on a surface plate because of its stability. Also commonly used at individual work stations during production machining for the same reason. The long, rigid cast iron T-slotted base is also...

Hello, I would love to find a set of castings for Paul Jacob's NDC-1 Twin Column, Twin Cylinder, Self-Starting Mill Engine. This engine appeared in "Live Steam" magazine and in "Steam & Stirling Book 2". If you have a set that you would like to sell, please contact me. Thank you. Regards, Mike

Hello All, EMARCH55-- Please post the pictures of your NDC-1 build. Besides myself, I am certain many others would love to see them. A few months ago, I e-mailed Paul Jacobs hoping to buy a set of castings for this engine. Here is his reply: Hello Mike, Sorry, but the NDC castings are no...

Hello Brian, Great job as always. I always enjoy following your design progression and your builds. You mentioned that your parting tool is the only way that you can machine a square shoulder. Do you only use carbide insert turning tools or do you use your own hand ground and honed HSS tool...

Correct. The barrel laps will expand 15%, so you have plenty of adjustment for wear. Just make sure that you clean the bore before you measure it with your small hole or bore gauge so as not to damage your measuring instruments with the lapping compound. And use solvent and then hot soapy water...

Hello, If you search this site, I am certain that you will find information on laps and lapping, it comes up often. A great source for commercial laps is: http://www.acrolaps.com/index.htm They are available from many sources like Travers Tool, Enco, MSC, etc. and individual laps are not very...

Hello Dave, Beautiful work on your vise. Thanks for showing us the photos of your machining ops, they are most informative. What type of broach did you use for your keyway? Was it a 'B' Series broach and what was its length? Did you also end up using a pusher to complete the keyway? I still...

Hello edan, Follow Greg's advice on the taper angle. If you can leave the angle of the compound rest undisturbed between machining all of the mating tapers, that will insure that they are a match. I would suggest increasing the 1/2" length of the chucking diameter to make sure the fixture is...

Hello: Executive Model Design or MiniCastings is the place to look. They are currently selling the Little Brother castings. http://www.modelmachinist.com/internalcombustionminicastings-c-107_137.html The owner of the company is a member here and a really good guy to deal with. Regards, Mike

Hello Ramon, Congratulations on your first set of gears. Very well done. I too am thoroughly enjoying your presentation of this project and have also learned quite a few new things along the way. Thank you for taking the time to share your work with us, it is greatly appreciated. Could you...