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Thanks for the replies. I knew it had to be staring me in the face :o! Jim

In the past I used a rotary table to locate the bolt holes in a bolt circle. Have decided to try the Boltcirc program by Marv Klotz. Have a small problem with the output, which probably means my input is bad. Garbage In/Garbage Out. If I have an equally spaced 6 hole bolt circle with the...

Thanks for the link.

Thanks Wizard69. I purchased a non-indexing Horizontal/Vertical 5C Collet Fixture that I will mount to the rotary table. Will try to post some pics down the road. Jim

Greetings, Has anyone any experience with a expanding 5C collet to hold an ID of a flywheel? I thinking in terms of a Elmer sized flywheel, 3" brass with 1/4" center hole. Read an older post that mentioned wobble but with a snug fit and up against the shoulder of the collet is that really a...

Thanks, dieselpilot. Thought that might be the case. JMI

Greetings, It has been quite some time since I have posted. I had moved to a job site where there wasn't access to machine tools but the situation has changed and I'm back in the saddle again. ;D Me thinks an Elmer's Mine Engine #29 is in the future. Was wondering if this 5-C Collet Index (the...

Thanks

I have an William's FP-AG-TK rear aperture (peep) sight https://www.airgunsofarizona.com/WilliamsGunSights.html on a air rifle that I need to be able to lower a little more then currently possible. It is a very simple job but can easily be screwed up. Just want to remove .050 thousandths from...

Hi Bogs, Thanks for the thoughtful and thorough answer. Jim

There are some threading dies where I work that are not adjustable (but are not thread chasing dies). What would cause the die to cut a full thread on one side of the round stock and not on the other. This was a 5/16 die NC and the stock was turned to .306. Stock was an unknown type of stainless...

Renaissance Wax. This place has it at a pretty good price: http://www.rockler.com/product.cfm?page=17424&utm_source=gan&utm_medium=aff&utm_campaign=feed Jim

Here is a build log to a PM Research vertical boiler. http://www.mysidewheeler.com/pmsboiler1.htm You may find it helpful. I assume it is very similar to the horizontal one. One of these days I plan to tackle one or the other. Good luck! Jim

Simply beautiful! Was unfamiliar with the slip eccentric reverse and a very clever device it is. A quick "Google" search reveals it has been around for quite a while. Been thinking of doing Elmer's Mine Engine for quite some time. What a great modification to incorporate into it. Would you mind...

Nicely done! And thanks for the source for the gears. Add this engine to my already impossibly long "to do" list :-\ Jim

Very impressive work. What kind of lathe is that? Jim

The thread is providing numerous tips and techniques that I shall find very useful in the future. Nice piece of work, MB. Jim

Thanks to all for the kind words of encouragement. Ed, the inserts you are referring to are for thread cutting (60*): that are at my job site. Can't give you any more info about them at the moment - will take a closer look at them when I get back to work next week. They do a great job. Zee...

I didn't take it as criticism at all. In fact what I was trying to say in a rather clumsy way was your design is superior (born from your experience) and had it occurred to me I'd have done it like that. Jim

Thanks guys for the comments and suggestions. I like the reversing handle design that you suggested, Marv. Might be "easier for the novice" but the design is born of experience. Had intended to replace the cylinder head/valve cover slotted screws with hex head bolts all along: but as for the...