Goldfish Development. Baby goldfish are born much darker than they will be as adults. This may be because dark colors helps these small, vulnerable fish escape the attention of predators. With proper husbandry, the fish gradually change color and develop orange or gold scales. Fancy goldfish may develop color patterns including white patches.
Posts: 1,396. Re: Bits for hand drilling hardened steel. If you want to experiment with carbide drilling on the cheap, buy a carbide tipped masonry drill bit set. They are about $20 a set new, but I find them at garage sales for about $1 for the set all the time and that's why I use them.
The Craftsman 29-pc. Cobalt Drill Bit Is Professional Grade for Heavy-Duty Drilling. When an experienced tradesman needs to get the job done, he turns to the quality of the Craftsman 29-pc. cobalt drill set. This durable set is designed with the professional in mind, but is a great addition to any handyman's tool box.