Yes that is exactly what it will be. I'm not planning in putting any filter inside at the moment but if I have to I will use some stainless steel scourers inside and put some mesh over the hole in the middle. It is similar to an original style filter with the louvres but initially I was just playing around while waiting for parts and this is the end result.

Hi mate, I'm not sure what it is called but to help others who may have the answers for you could you post more and as much details on what it is out of. Make and model helps a lot.

Many others have been down this track using a MIG on cast steel not iron as there is a difference. Most say it is no problems but still work with  some pre heat and a slow cool and do short runs.
So as I am waiting for parts and my head keeps jumping from one job to another this was play time for today. Straight from the "why not" department and it will come in handy later on for the air cleaner that I have to make. Never tried doing this before and for a first attempt it is ok so this will be it, rough n ready. Tried a few ways to get the little punch to work and in the end I simply cut the sheet metal with the 1mm cutting disc then introduced the punch while holding the sheet metal in place with some flat bar iron and clamps.

While still waiting on the electrolysis to do its thing I played around with some ideas or experiments, why not I say!
First was to see what happens when you use a MIG welder on cast steel, well it looks as if it welds. I will give it a flogging soon to see what it takes to fracture. Some of the valve stems were badly worn on the ends so again what happens when you weld these up with a MIG.

Hi Mike I found a bloke 2 hours south of me that has a wide selection of rings and valves and soon is expanding into piston repairs, interesting.
So at least my rings are being made and along with a huge order of other rings they will then be sent to Oz and then mine will arrive soon after that.
To day I decided while waiting for the electrolysis to hopefully work on the injectors bottom needle I started to make a new pin for the rocker arm to pivot on and add a better oil hole for lube by cutting a groove in the shaft and boring an oil hole halfway down the pin and then cross drilling it. I also reground the end of the rocker arm where it meets the valve stem. Next is the pivoting ball, this will explain itself in the future pics but I may need to make another push rod from the cam follower through the pivot ball to the rocker arm. You will notice the old brazing repair from long ago but this one is better than the other one I have to choose from so this is it.

A squirt of engine oil down the injector hole also helps when an engine has been sitting around a long while. some either may do the job for you but just dont be heavy handed, you have to try all sorts of ideas to get life in some of these engines.
Good luck and let us know how you get on.

What Tanto is describing can be checked by undoing the bolts that hold the pump in place and turn the engine over. If the pump lifts up and down then you know the plunger is not stuck. If it does not lift up and down then the plunger is stuck.

Now for a silly questions,

Is the throttle fully open? These like to be started cold on full throttle and do you have a cold start button/lever on your pump?