Hi, I'm doing some hobby level wood and metal fabrication projects around house - shelving, boat cradle/ boat lift / trailer implements/ carts / work tables/ bike racks etc. I'm mostly using scrap material that I happened to come buy...
I'm not a mechanical engineer, and have no idea what load/deflection ratings are for different materials. I've been using 2x4, steel tubbing, angle iron ... just found 20 ft of 2" pipe another day :) ... Currently, when I'm designing stuff, I just rely on limited prior experience and eye measure. Some things turn out to be overbuilt and sometimes things fail under load (hopefully it's not critical and I get a chance at redesign :)). For example, I built a manual forklift last week and it crumbled while testing/lifting my dad - now I know where to strengthen it :) , but is where a better way?
Would it be worthwhile to look up load ratings of common materials like steel pipe and 2x4? Where would I find such information? Or are this calculations so complicated, that I'd be better off continuing with what I'm doing?
For making plans I'm currently using Vectorsoft Draw - a 2-d drawing program on PocketPC and experimenting with Google Sketch-up for 3-d drawings. Move away from paper a couple years ago. Would like to hear comments on what else is good.
Are there any good books for home-workshop design /plans making? - just basic practical stuff that can be readily applied, not looking for Mechanical Engineering intro course
Thanks a lot
Ross