Hi all machinists!
I am musician, not machinist, but I am occupied with electronics and specially with speakers for so long time. So, after some research on the net I got strong decision to build for my speaker shop, smaller (rather shorter than smaller) lathe about 1200mm long I need for machining at least for the beginning some simple tools for soft speaker parts, iron magnet pole pieces ...
Of course I found Gingery lathe project, but his machines looking to me too weak for my purpose. Still there are so many nice ideas to build machine parts almost from nothing that is very appropriate to me because now I am not able to spend hundereds or thousands euros for this.
Also I found some Open source lathe projects with concrete bed constructions. They seems to me are not serious so much, because mainly there are not very clear explanations about building, technical specifications and good examples of their machines, and after some time they found themselves they are wrong ...
Main part about I am worried is lathe bed. For Gingery lathe bed building style I am not sure how I will make bigger and stronger lathe bed with aluminum casting.
If I will build concrete bed I got some ideas, but I am not sure what exactly structure of concrete and dimensions there are need for real affordable lathe bed and his length I mentioned.
Also I found something about using resins like Epoxy Granite, but I dont know even where I can to find it.
On the end I got idea to make lathe bed from some heavy steel profile like "I" or "U". With "I" profile about the size of 100x120mm cross section, I would weld inside of it profile left and right reinforcements about 5-6 times by length, than machining edges of top plate of this profile to get straight and use them like ways.
About how to get strong and affordable lathe bed I thinking also to use combinations of methods I mentioned, but here I need help with experienced machine builders, so all good advices will be appreciated.
Please only write with simple words and without abbreviations because I am newbie in this field.