Scott flame licker build

Gallery, Projects and General > Project Logs

<< < (9/59) > >>

Bogstandard:
David,

I know exactly what you mean.

Unfortunately, I am the sort of person who demands excellence from myself, when really, on a job such as this, it could be a little more haphazard.

But on this particular casting, this squaring up and flatness had to be done this aggressively on these two sides, the whole of the engine depends on how square the bored hole is. The top will also get the squaring treatment, as I have a bit of a bling plan for that, but the opposite side to this machined one, I am going to see if it can just have a recess cut square and level, so that three sides get left with the rough casting faces on them.

Nick,

The gas engine isn't designed as a model, but a full sized 1 to 1 working engine based on the sizes of portable engines of the time it is supposed to represent. Just like jobbers who do work now, they used to carry their small power tools around with them, and so the power souce as well (instead, we have the modern day battery packs).

John

NickG:
Ah right, didn't realise that John. Thought it looked more complex than most models though so it makes sense now.

Bogstandard:
The final bit for this week and at a good stopping point.

Last time I had got the two faces square to each other and nice and flat. This time is getting the third face square or parallel to the other two.
This is the standard set up technique, one good face down and tapped onto a pair of parallels, with the other square and flat face against the fixed chuck jaw. A piece of soft material, in this case ali, is placed between the moving jaw and the fourth rough side. Doing that puts all the pressure onto one small point and takes up some of the irregularities on the job. You don't want to go putting on heavy cuts while in this sort of setup, in fact, I changed my normal cutting direction, from X to the Y axis.

The top surface was soon cleaned up.

I need the big offset hole in the top cleaning up for a feature I will be adding, so the boring head was roughly centred and set to work.

This is as far as I want to go with this piece at this time. It still need a few small holes drilling, and boring for the cylinder sleeve. But I want to wait until that is finished first, as the boring is a more controllable exercise than bringing the sleeve down to size.

I hope to be restarting this post later next week, depending how I get on with the Minimag build.

Bogs

saw:
Looks great Bogs, I'm folow you'r log with the greatest interest. :clap:

Stilldrillin:
Squared up. Centralised. Sorted..... :wave:

Able to be comfortably set aside. For later, easy pick up and resume...... :thumbup:

A good satisfying feeling! :D

David D

Navigation

 Message Index

Go to full version