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I built this little edge sander drill press attachment for deburring slightly larger parts than your example. A similar unit was actually offered as a drill press accessory back in the 50's. I got the idea from an ad in popular mechanics. The variable speed Clausing drill press provides plenty...

Not near as famous as Cherry, but a prominent engine builder, Dr. George Genevro passed away at the age of 102 on 11/16. George was the machine tool prof at Cal State long Beach and owned Gemaco, a foundry casting project kit supplier. I purchased many of his Tital 60 airplane engine kits to...

I would use a single, large center sprue with three large gates at 120-deg intervals, so the sprue acts as a riser.

An earlier thread display of old school wooden pattern construction took me back to my metal shop teaching days when I loved to make one piece, split, and match plate patterns. The crash bang 3D modeling methods while expedient, loses the art and craftsmanship part of patternmaking in my way of...

On e way to get & retain more heat with propane and Mapp torches is to place the parts on a single electric stove top element and preheat. I use a sheet aluminum disk over the element and form a enclosure out of fire brick.

Several weeks ago, there was a discussion about stubborn models bearing and gear removal. In the course of getting my Duclos Odd Ball engine running I made a small separator/puller to extract the timing pinion. Apologies for the quality of the sketch but it's a simple build and eliminates...

The repair epoxy used for many years in machine work is Devcon. Check out their products, I know they have a steel infused epoxy, and they may also have an aluminum product.

Blondi Hacks just released a video on powder coating the frame components for a Pennsy A3 Switcher. Mark Presling also does a lot of powder finishing using a repurposed kitchen oven. I'm thinking i should make the leap.

Just an article to mention on a cam shaft grinder build in the Nov/Dec 2004 issue of Home Shop Machinist magazine. by Jerry Keiffer. It is made from Sherline lathe parts, and a very similar one is exhibited at the model engineering Craftsmanship Museum.

I taught high school metals shop for 40 years and we cast with mixed aluminum scrap using a aluminum flux and nitrogen degassing pellets plunged into the melt with a steel rod with a cup shaped end to push the pellet into the mix. With proper temperature, flux treatment and dry pouring area we...

I started this little Duclos 6 cycle engine 30 years ago as a present for my dad who loved models and small engines. He passed midway through the build, so the parts and plans were stowed away. I discovered the parts and plan in a shop cleanup last year and completed the build in a couple of...

Alum is a Houshold compound used in canning and food preservation. I\'m not sure of the concentration but mixed with water and heated near boiling, it will dissolve HSS drills and taps. Several reheats will be necessary and i used a bit of Sulfuric acid the one time it worked for me. I'll try to...

If the part is aluminum as it appears, a solution of Alum and water heated to near boiling will dissolve the broken steel the next time if ever necessary.

At age 80, my shop work was severely hampered by arthritis to the point where everything I picked up seemed to end up on the floor. Inside the house, drink spills had me in the dog house on a regular basis. In the shop, even as i tried to keep hydrated, I would experience painful hand cramping...

The Craftsmanship Museum, Carlsbad, CA has at least two of the miniature machine tools displays. heck out their virtual tour. www.craftsmanshipmuseum.com.

A word of caution regarding inexpensive welding power supplies rated for TIG, Many of the imports offer secondary current only in DC . To weld aluminum and magnesium in a practical fashion, you need a power supply that delivers AC with Hi-Frequency stabilization. Several of my friend's fell...

A dividing head is a real luxury for some home shops. I found the pictured indexing head at a flea market and used an eBay plastic gear to cut the timing gear for my Duclos 6 Cycle engine. I was unable to find a brass 32DP, 60 tooth spur gear so I bought a cutter and the progress is shown in the...

Hello Paul, I too have just joined the forum and like you graduated from Long Beach State in industrial Arts. I retired from 40 years of teaching in 2005 and live in San Marcos, CA. Seems like our lives might have crossed at one time. Tom M. is a LBS, IA grad free flight guy that lives in...