Regarding making scales, I learned from watching the Videos by this guy in the US
http://www.maggardrazors.com/
He uses a lot of equipment but a lot of the work can be done by hand. Having watched the videos, I basically copied what he does and after a couple of false starts was turning out some acceptable results. If you take a look at the advice on SRP there are many people who make scales with limited equipment.
Honing obviously requires an investment - the finer the grits the more they cost - so, if you intend to start refurbishing blades then expect to invest in a range of hones. However, if you just want a hone for refreshing edges then learning to use a hone is not too difficult, provided that your razor is in reasonable condition.