Making the Small Parts

[Philjoe5]

Steve,
I'm interested in the relative sizes of the two engines in your photo...the one sitting on the coin and the one to its right. Thanks, and I am amazed by those who can work on this scale. I unfortunately must go in the other direction, ie, making the big parts ;D

Cheers,
Phil

 

[mklotz]

Could you tell us more about this? My Dremel-clones are looking for additional work.

I discussed this in an early post:

http://www.homemodelenginemachinist.com/index.php?topic=414.0

While a hand-held Dremel is a very versatile tool, I find that, in many cases, I can obtain better control and results by turning it into a fixed tool and bringing the work to the tool.

 

[Kludge]

I discussed this in an early post:

http://www.homemodelenginemachinist.com/index.php?topic=414.0

While a hand-held Dremel is a very versatile tool, I find that, in many cases, I can obtain better control and results by turning it into a fixed tool and bringing the work to the tool.

Cool! I saved the thread - thank you! Since mine aren't "real" Dremels, some redesign of the support is indicated which, in turn, means possibly making it hold a handpiece instead. Hmmm ...

Again, thank you!

Best regards,

Kludge

 

[mklotz]

A rectangular plate with a V-groove and a few judiciously placed hose clamps should work just fine and provide adequate relocation accuracy. It's for sanding and grinding - watchmaker precision isn't required.

 

[stevehuckss396]

Steve,
I'm interested in the relative sizes of the two engines in your photo...the one sitting on the coin and the one to its right. Thanks, and I am amazed by those who can work on this scale. I unfortunately must go in the other direction, ie, making the big parts ;D

Cheers,
Phil

To the right the base is 1.5X1.625, 1 inch flywheel, and a .2485 piston.

The one on the dime the base is .406 X .375, .250 flywheel and a .061 piston.

Plans are in the download area under "Micro HOSC"

 

[GailInNM]

I posted this photo in the Camera Review thread
http://www.homemodelenginemachinist.com/index.php?topic=3442.0
after getting a camera that I could actually photograph it with. It is a small bolt sitting on the back side of a US Penny.

I made some bolts for a project about 8 years ago when I could still see to make such parts. The bolt is a 0.5 mm (0.020) major diameter and has 0.125mm pitch (203 tpi). The hex head is 0.035 inch across the flats and was broached with a homemade rotary broach in the lathe. The threads were single pointed. At the same time the bolts were made, a form taps were made from 1/16 drill rod. The bolts went into a brass plate 0.015 thick and the tap drill was #78 (0.014 inch diameter). As I recall, that was a little bit small for a form tap, but it cut enough oversize that it worked.

I will never try this again. Now days I have troubles working with 0-80s.

 

[Maryak]

Gail,

Amazing work

, I don't think I would like to work that small even if, like you, I could even see it. :bow: :bow:

Best Regards
Bob

 

[bigal2749]

No discussion of tiny parts would be complete without mentioning a modelmaker in Kansas City who goes by the screen name of rivett608 over on the PM board. Here's just a random sample of his work...

http://www.practicalmachinist.com/vb/showthread.php?t=140639

http://www.practicalmachinist.com/vb/showthread.php?t=110684

http://www.practicalmachinist.com/vb/showthread.php?t=97054

http://www.practicalmachinist.com/vb/showthread.php?t=143518

http://www.practicalmachinist.com/vb/showthread.php?t=144824

http://www.practicalmachinist.com/vb/showthread.php?t=112534

If you frequent the PM board, keep an eye out for his posts. They're always worth reading.

Would I love to see a video of him actually making one of those items

Worked with wood for over 30 years and can't imagine wood working in that scale