Showing posts with label cogs. Show all posts
Showing posts with label cogs. Show all posts

Monday, 11 July 2011

Micro SteamPunk Adventures


One of my latest experiments has been adventures into micro-steampunk. Now, I don't know if such a thing exists, but it makes sense that it should! I've even seen film of nano technology where they made a simple cog and wheel that moved, it seems everything starts with cogs!

Doubtless you've been previously battered by one of my rants about 'sticking cogs on stuff and calling things Steampunk' and I tend to avoid using cogs just for the sake of it. However for some ideas I've been mulling over for the past year or two they suit it perfectly. And yes, there will be glass involved too.

I can't use glue for what I have in mind, so engineering wise it makes sense for me to screw parts together. Problem is there doesn't seem to be many tiny teeny nuts in your average watch or grab bag of steampunk watch components. So, as I always figure, if you can't buy it, make it!

First step is to making tiny thread, for which I needed a tap and die set to make matching micro-nuts and bolts. I thought the £20 I paid was rather pricey, for a faily unimpressive plate of steel and pack of taps, until I looked at 'proper' ones from watchmakers catalogues. A professional set a mere £395!!!!!!! I've given them a quick go, and they work rather well on soft brass, but a little stiff on stainless steel. I even managed to make a tiny thread using one of the larger cutters on an old thin mandrel! So far I've made a very good threaded hole and bar thats only 0.7mm!

I also figured a small watch lathe would help when boring micro holes neatly and squarely into the ends of brass rod to make nuts. (I am looking at sizes between 0.9 - 0.4mm) I had an old baby wood lathe, which although ok, didn't have a second chuck to hold work.
A quick scrounge around I found an old hand drill which had rusted solid, but the chuck was still good.
It took alot more to get free than I expected, but finally got it out, including cutting it out of the nice cast iron frame, which was a shame.
I was originally going to leave the bevelled gear on it, but it didn't mount very well. A look overhead and I found an ideal bit of old curtain pole (knew I kept that for a reason) which made an adequate stock holder.

Although I drilled the stock with the mini drill to make sure it's level, (that wood was harder than expected, it even started to smoke!)
the set up isn't ideal. I've given it a test drill, it needs refining such as a turned thread instead to ease the work into the drill, also I need to stiffen everything up as the mini drill isn't steady and can easliy be knocked off centre. However, it is a start!

The top quick pictures are of my first micro-thread; I used the plain end of a piece of threaded rod from an old watch. The thread is about 0.7mm to 0.74mm, so quite small, but I am looking at making it even smaller. That hole in the brass bar really is threaded, with a nice shiny penny for scale!

Tuesday, 28 June 2011

Decorative brass effects & Steampunk Radio sculpture revisited


A few months ago I posted a picture of a brass plate I was working on, which then got put back on the back-burner once again. Pulling it out a few weeks ago when I had five minutes spare I realised I'd made a daft mistake. I'd forgotten to put a sealing layer over the initial brass before putting on the decorative paint coat. The masking I'd used to make the pattern had left some glue and grot, when I tried removing it it had only made things worse. Doubtless some people would say it adds character, but I know it's there and shouldn't be!

It's taken me a while to decide to start a fresh, hopefully learning from my mistakes along the way - but then isn't that what arts and crafts is about? Here is a picture of the new bright and shiny brass plate.
To make this brushed brass finish is actually quite easy and takes no time at all. If you pop down to Maplin's or an electronics stockist you can buy a rubberised polishing block which is normally used for degreasing and cleaning the copper on PCB's (printed circuit boards for the non-technical) prior to etching them or soldering components onto them. Their part number is HX04E http://www.maplin.co.uk/polishing-block-2109 if you want one too! It works really well on many soft metals such as copper and brass, and lasts for years if looked after, although mine looks a little grubby from the dirt I took off this apparently clean brass sheet!

To get a good finish it's just a matter of polishing in one direction, then the other, and back again a few times until you get the finish you like. Just make sure you keep it flat against the brass as you do, and go in nice long and even strokes.
It's no good for really deep scratches, but will certainly buff up most boring bit of brass and copper. To help hold it use some double sided sticky take to fix to a bit of scrap card; saves those finger marks on the edge! (Neat trick I got from an instrument maker!) Brush off the remaining dust with a soft cloth, and lacquer or spray varnish to protect that finish.

If you are feeling really fancy, after you've got a nice finish with the brushing marks going one way, using just the corner of the block make some figure of eights over the surface to produce a unique decorative look. If you don't like how it looks, just polish again to remove it!

I'll try and post some more pictures as this comes along, and also explain what I'm going to do with the bag of cogs and this odd little (and surprisingly expensive) little metal gadget too.