I see no discussion of the merits of leaky roofs, rather a mention of why the OP, a new member, recently welcomed here presently cannot afford a milling machine, and a supportive reply or two.
Not sure who is referred to as being lost to model engineering.
And the single troll style reply in this thread was supported by only one poster as "honest", if that type of thing did have a lasting discouraging effect on anyone.
Responsibility and accuracy are as much a part of discussing engineering as they are in engineering itself.