546 



Journal of Agriculture, Victoria. [lo Aug., 191 i. 



Drilling. 

 It will be necessary to have some means of drilling holes. There are 

 three methods that may be adopted. The first and best is to buy a 

 small machine (Fig. 6), costing from 35s. upwards. It is simply bolted 

 on to a strong post. The second method is by means of a ratchet-braes. 

 To fit up the ratchet, two strong right-angled brackets are required to be 

 made and fixed to the post with coach-screws, as shown in Fig. 7, or to 

 a drill post (Fig. 8), which may be fastened to the bench. The third 

 way is by means of a "swing-braes," which is a very common home-made 

 affair. It consists of a top and bottom bracket, the same as that shown 

 for the ratchet, except that a hole is drilled and tapped close to the end 

 of the top bracket, in order to take a bolt for the purpose of applying 

 pressure to the drill as it cuts its way through the metal The swing is 



Window , 



Scale 



5. GROUND PLAN OF WORKSHOP. 



made from about i^ in. diameter mild-steel or iron. It has a square- 

 tapered hole punched longitudinally in one end, for the reception of the 

 drill, and a centre made in the other end to receive the bolt which applies 

 the pressure to the drill. Fig. 6 shows the arrangement. 



The forging of the brackets and swing-braes requires considerable 

 blacksmithing skill ; so, under the circumstances, it would be advisable 

 to purchase the finished machine. It drills more quickly and accurately ; 

 it also requires less labour, and is so easy to operate that no special instruc- 

 tion is necessary. It is therefore not proposed to more fully describe the 

 making of the various parts required for the other methods at the present 

 juncture. But, later on, as progress is made with the use of the tools, and 

 some may desire to try their hand at making a swing-braes, the details will 

 be furnished. 



Building the Forge. 



Let it be supposed that the shop is now built, and that it is decided' 

 to adopt the bellows principle of forge construction, similar to that illus- 



