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Looking Good George.

This is the first in the 3 Part Mini Series on how to machine the Wallaby Cylinder block. Is this how you square up stock? Plans for the Block are here: https://gregsmachineshop.com/downloads-wallaby-twin-four-stroke-ic-engine/

Steve, I use soildworks for my CAD and I can do what you need, if you want to PM with your files and a sketch with what you would like, I can generate the STL files for you. I would import STL as a "solid body", then add the tabs as you specify. Finally I would cut the part up into smaller...

I like the fact that the tabs are shorter and there is less material to cut through and less filing work required to clean up the final part. I like your final approach for two reasons, as you stated adaptive is better on the tool, and I don't like cutting slots. And of course, no tabs! thanks

Steve, STL files describe the outside surface of an object by defining it in a bunch of conntected triangles, that is, an STL file is not a solid body format. Fusion360 can import and scale an stl file, but the usual way of cutting an STL file in half is in the 3D printer slicer. Now most CAD...

I've been using Fusion360 CAM for a little while and on the whole am very pleased with its capability. But it often seems that I have to finagle ways to fool it into doing what I want. I am creating a video series on some of the tricks and tips I have learned, and am looking for other ideas...

Here is the next video in the Wallaby build series. These initial videos are building skills that will be used throughout the build. This one covers lathe work focusing on a simple custom form tool to create an inside radius for a cosmetic washer. This is the Wallaby engine display base we...

Thanks for the files George. I am really impressed with them, I was surprised with how many there are. The detail is crazy awesome, inside and out. I hope my 3D print turns out as well as yours did. I'm going to have me some fun.

Terry, All the best during your eye surgery! It will be awesome to be able to see clearly afterwards. Many of us are in the same boat, I need ALOT of light to do most things now. No worries about the scrapped block, it could have come much later in its machining. And I noticed you had a nice...

In Part 1B of the "Build your own Wallaby 30cc Twin" series. I go into depth on how to use Fusion360 to create toolpaths and Gcode for a simple 2D profile part used in the engine display base. Then I cut it out on the home made CNC Router. The plans and fusion360 files can be found here...

Yeeeaaaa! Terry is back making chips! It's like Netflix releasing a new season of my favorite show.

Here are a few ideas for using the 3D printer in the home machine shop. Sorry about the crappy audio, I'm still trying to figure this Youtube thing out.

Here is the first machining video in the 30cc Wallaby 4 stroke engine construction series. I am starting with the simplest parts first to ease into the construction process.

I've been having fun making videos recently, so I decided to make a youtube series on how to build the Wallaby from Scratch. I've been working the last couple of months putting the finishing touches on the plans and am now ready to capture the build process on video. The first in the series:

Awesome, show me more! show me more!

Offy – Intake Manifold I like the look of the original dual side draft carburetors as shown in the following photo: However, I have never made a carb before and want to start with a single carb set up for initial engine checkout. That is what I am going to fabricate here and this is the...

Offy – Exhaust System Part 2 I modeled the exhaust collector cone in CAD and then flattened it to give me a pattern of the holes as shown below: I glued this on and then machined and ground out the material. Below is a test fit of one of the bent tubes: Next I grabbed a piece of scrap...

K2, Find my latest configuration of the cooling system in the last post of this page: https://www.homemodelenginemachinist.com/threads/30cc-inline-twin-4-stroke-engine-based-on-westburys-wallaby.33191/page-5 The little aquarium pump works great and provides good flow, and the clear tubing...

Offy – Exhaust System Below are a couple of photos of Offenhauser Exhaust systems. Mine will be fabricated from a brass flange plate, four 3/8″ 90 degree bent 304 stainless steel tubes and one conical collector made from a 16mm X .5mm 304 stialness steel tube. Below are a couple of views of...

La France, My thinking regarding whether the coolant should flow from top to bottom or bottom to top is as follows: I want to minimize the amount of air in the block and try to insure it is full of coolant. Do a thought experiment with me and imagine we have a fish aquarium we want to keep...