Recent content by OllyM

I'm in Scotland, so no sunlight here ;) Cheers Oliver

Yes, they just mean UV curing after printing and clean up. All the resins need something like that, although I've yet to see any that have a datasheet specifying exactly how much UV they need (intensity / mm^2 or whatever). Also helps to warm the part up. They are very expensive compared to...

That is beautiful work, absolutely superb! I've been using a resin 3d printer for mechanical parts (gears, brackets, mounting frames etc). One thing to bear in mind is that most of the resins are very brittle, very much like acrylic. I've used purpose made engineering resins have much better...

I can't comment on the quality of gcode I've gotten out of Cambam so far, but as a software engineer in my day job I would much rather use mature software that is fairly static and I can download and keep. The problem with subscription, cloud based solutions is that you are totally at the whim...

I use Rhino3D for my CAD modelling. Originally got it for designing model planes and drones, it's curved surface tools are superb. Mainly use it for mechanical design now and like it alot. Costs a bit under £1,000 for a perpetual license key. You can buy a CAM plugin, but it costs more than...

I've *just* (as in yesterday) started trying CamBam for generating g-code for a little desktop milling machine I've just finished building. So far so good! Not as pretty as Fusion, but pretty easy to pick up. Evaluation version (which I'm using) gives you 40 free sessions until it limits the...

I've just made a start on this engine, really good to see the progress you're making, looks superb. How did you turn the radius on the valve stem? I'm planning on using a steel liner and ductile iron ring, but far away from making those bits yet.

Excellent, thank you! I'd not come across M-machine before. I'll order up a bit of the SG iron once I've finished my lathe upgrade, see how it machines. Cheers, Olly

Thanks Jasonb, that might help. I bought the English copy of the plans, and that just states cast iron with no further spec. I should also have mentioned that I'm in the UK. I've seen small quantities of "meehanite" cast iron bar on ebay for around £2 per inch in the kind of size I'd need. I can...

Hi folks, hoping you can offer some advice. I recently bought the plans for a 17.5cc single cylinder four stroke from CAD+Modelltechnik Jung in Germany. (http://www.cad-jung-shop.de/epages/62479729.sf/en_GB/?ObjectPath=/Shops/62479729/Products/00-Z0001-0). This is to be my first engine project...

Thank you! This place is definitely right up my street, some amazing engines and skills on show. I'm working to increase my capabilities at the moment before I really get stuck into the engine building. Think I've figured out how to adapt my lathe to do CNC milling without having to build a...

Hiya folks. Thought I'd introduce myself after lurking around your lovely forum for a few weeks. I got into machining as part of my previous business venture, making high power lighting systems for drones and UAVs. Needed aluminium heatsinks. Started out manually machining them, got old really...