Littlelocos Model Engineering

Littlelocos Model Engineering Always one cut shy of a paperweight. That's my rule for precision metalworking and Model Engineering - the building of miniature machines.................

A quick post with a little more NH mixer progress. Continuing the slots on the other 3 castings.
08/23/2026

A quick post with a little more NH mixer progress. Continuing the slots on the other 3 castings.







Who needs an oily oiler? While I had replaced the gaskets on the Gorton Mill's spindle bearing oiler, it still leaked a...
08/19/2026

Who needs an oily oiler? While I had replaced the gaskets on the Gorton Mill's spindle bearing oiler, it still leaked and made a mess with the 10W spindle oil. Over the last couple of evenings, I disassembled the oiler, soaked it in degreaser, allowed it to dry, and then reassembled with tacky gasket sealant and teflon pipe sealant.

A cool, old trolley is heading from one of our favorite places, Rockhill Trolley Museum to one of our other favorite pla...
08/17/2026

A cool, old trolley is heading from one of our favorite places, Rockhill Trolley Museum to one of our other favorite places, Williams Grove Railroad to participate in this year's steam and gas engine show! Enjoy!

The next two operations square up the boss to match its 45-degree angle followed by slotting it 5/64" (0.078"/2mm) wide ...
08/17/2026

The next two operations square up the boss to match its 45-degree angle followed by slotting it 5/64" (0.078"/2mm) wide by 7/32 (0.219" / 5.5mm) deep. The sides of the boss were machined with a 1/8" end mill. The slot, a 1/16".







Turn the vise 45-degrees, and now where'd that reference point go? Another decision for this prototype batch was needed...
08/13/2026

Turn the vise 45-degrees, and now where'd that reference point go? Another decision for this prototype batch was needed regarding the boss that holds the tiny fuel regulator needle valve in position. In order to work with the original castings, I "rotated" the boss and its slot from 30-degrees to 45. This was a compromise needed to align one edge of the slot with the center of the fuel regulator -- but first, we need to "locate" the mixer body under the mill spindle.







Next up was more of a challenge than I expected. Locating the four holes to be drilled, reamed and tapped so that the h...
08/12/2026

Next up was more of a challenge than I expected. Locating the four holes to be drilled, reamed and tapped so that the holes would end up near the centers of the bosses in the castings took more than an hour for each of the four castings. The new castings should make this task much easier.







The first operations on the mixer body are to square it up so that it can be held accurately and securely in the mill vi...
08/11/2026

The first operations on the mixer body are to square it up so that it can be held accurately and securely in the mill vise.

The new mixer design simplifies the machining while improving both fuel and air flow. It also includes a replaceable ve...
08/10/2026

The new mixer design simplifies the machining while improving both fuel and air flow. It also includes a replaceable venturi to help with tuning for more reliable running. First, we'll machine the mixer bodies from the 4 castings shown in the foreground. Hopefully, soon we'll be able to see how it works as well.

08/10/2026

Here's a short video showing one of the main reasons I've wanted to get the Gorton Mill running. Cutting a 1/4" long, 5/32 deep, by 1/16" wide slot in a miniature carburetor with a 1/16" diameter end mill running at 4,000rpm. This also shows how the micrometer depth stop works for quickly advancing for each 0.010" deep cut. Enjoy!







Address

411 N Colonial Drive
Hagerstown, MD
21742

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Tuesday 6pm - 9pm
Wednesday 6pm - 9pm
Thursday 6pm - 9pm
Friday 6pm - 9pm
Saturday 8am - 9pm

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+13019917088

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