Machineing Steel Rod ?'s
I am sure that this is something that is simple to those of you that know, but I do not know the answers, so I seek your expert knowledge and help.
I may be trying to make, or have made for me, some pieces of cold rolled 7/8ths steel rod 3.35" long with one end rounded and a hole centered in the other end that is 3/8ths X 1.75 deep. (picture below). I made a little trial run with the inadequate equipment that I have, using some scrap that is not the right dimension, yesterday to kinda get the feel of what is going to be involved. To do it myself will probably involve buying some more equipment and / or rigging up something to hold them the right way under my drill press and an easier way to round the end. They need to end up smooth enough to have them powdercoated. I have downloaded the eMachineshop from the net but have not yet mastered the CAD drawing thing, and would like more info before I approach any local machine shops. Several questions that I have are as follows if anyone with that knowledge would be so kind as to answer them.
1. Suggestions on the easiest way to make them.
2. If I have them made, a ball park estimate of what would be a reasonable cost in lots of say 5, 10 or 20 ?
3. How much would the change to a little different dimensions, an inch longer, or smaller diameter affect the price ?
4. Would stainless steel be much more expensive ? (I know that it is harder to work, I can cut it with a chop saw and weld it, but never had much success trying to drill it.
5. Does freezing stainless steel for a week or 10 days increase the hardness of it ?
6. If I wanted some of the parts with a slight taper getting smaller toward the rounded end, I assume that would have to be done on a lathe or milling machine, how much could I expect that to drive the price up ?
Any suggestions and help would be apprciated, thanks in advance and see pictures below.
Pattern I am trying to follow:
First practice effort on scrap without regard to precise dimensions.