This goes back to offering alternative methods like angle iron to make brackets with nuts and bolts? Decent saw and a pillar drill are the basic requirements for any build. Master the art of a centre punch and people should be able to build quite an accurate machine.

If you don't have a drill and saw then an allowance £200 would get added to the budget straight away. The reality is if can only build a budget machine right if you have the budget in the first place. problem is with budget builds also comes patience, many people don't want to wait.