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Welcome Eldi About 23 years ago I decided I needed a bench top cnc mill. I had a Seig Lathe and a Sieg mill/drill that i was very happy with. The Australian agent was in Brisbane and had machines using Sieg software. I wanted to use Mach3, Contacted Seig distributor in UK and ordered it from...

Mike, have you had a look at the gcode file that you are using and see if it is actually programmed to produce a perfect circle If the problem is with the software you are using you could use as a trial, Delta cad for your dfx drawing, Sheetcam for gcode production. I'm not sure you can get...

Hi all, I had this problem when drilling an oil hole in my Offenhauser model. I needed a drill about2.5mm dia and a hole length about100mm. I used anew drill of the correct size and ground a scarf on the plain end, then on a length of SS rod of the same dia of the drill ground an identical...

I have a Sieg KXi cnc machine of the same vintage .I'm not a fan of Chinese machines but must say that the KX1machine is exceptionally well made. Having said that your machine is not mechanically at fault. I would assume that your driving computer is thirteen years old and could be the source of...

Attached is a photo of a circuit board I milled on my cnc machine It is 70mm by 50mm so large enough for fat fingers are able to do the wiring with ease. It takes "normal" electronics and soldering up is no problem. The other attachment is the circuit. I did this some 10 years ago but I don't...

The knurls may be sold in Australia but sourced from China. Check where they are manufactured before you pay your money. Mago

I use Delta Cad with DFX format and Layers. Sheetcam to generate G code. Sheetcam file into Mach3. Worked for me for 10 years. Low cost and no cloud. Worth a try. Mago

My recollection of Linen is as a metal work apprentice in the Midland Junction workshops for the railways,1950. The linen was rolled out on to the board and securely held down. I would have thought glossy side up but memory fades. The sheet was "sized" with a "pomme" filled with very fine chalk...

In the assembled engine take out all the plugs . Turn the engine till one piston is half way up the cylinder. Part fill the cylinder with engine oil and turn the engine till the piston refuses to move. If the piston goes to TDC then you have leaks. Escaping oil will give you a clue as to the...

Another Offy 270 I was fortunate in having Ron Colonna's "building the 1/4 scale 270 Offy" manual, as without it construction would have been even more difficult. Whilst not having to exactly follow his methods it is a valuable starting point. I used both metric screws etc and BA for the very...

Twingle or Split single. At the end of WW2 Triumph Motor cycles produced a 500cc split single called a "Speed Twin". It was produced in several guises and with factory add ons was used for road racing. In the right hands it was very competitive with factory single cylinder racers until the...

I cheated. I made the conrod complete with cap and bored big end. Then had a friend with a wire cutter remove the cap, finished. The wire cut is only a few thous, just enough to nip up the big end bearing. Mago

It seems this is the month for Farm Boy manufacture and this is another one. It follows the Jerry Howell design with a few mods. Couldn't face the machining of the flywheels from CI so made some patterns and had them cast in bronze. All went well but machining them in a small lathe is a...

Hi colsea, I bought HE sensors from RS Components, probably Sydney on the net. Cost about $4.00 plus delivery. Their stock number is 1811463. They work with CDI and TM6 electronics. They are the bare HE unit so you have to solder on the lead wires and insulate, all with care. Done properly they...

I finished the Farm Boy a little while ago and had some starting problems. Various contributors have made very valid suggestions so I don't want to repeat it all again. However I don't think anyone has suggested that you make the governor inoperative. If you are trying to start the engine with a...