DIY cam bearing install

Putting together my 360 I would like to do as much as possible myself. Why? I would learn from it and also maybe get some satisfaction out from knowing that I did it myself. I have never installed cam bearings, but I think I could do it. Most of my friends have had the shop do this for them. No one I know owns a cam bearing tool. This is the dilemma. Buying the tool and have it shipped to Sweden costs as much as having a shop do it. So I'm asking you with experience, have you rigged something up yourself and been successful without the tool. I have a few ideas on how to fabb one myself, but I would like to hear from people who have already done this.

Thanks!