The main problem, other than lack of rigidity, is that when you sidecut with an Drilling Bits For Wood Quotes end mill that is chucked up in a chuck that is mounted via a taper and all the drill presses I have seen use a taper it acts as a very effective chuck remover. Hardened Slot cutting drill bit for metal case. Designed to hold your part on 4- and 5-axis milling machines, these vises provide rigid clamping while exposing five full sides of the workpiece. Use a stout clamping washer and your mounting pier will be plenty strong and stable. Forum Rules. Search Results.

Join Date Mar Location W. The carboloy rotary file is a relatively cheap tool. If you need to extend the slot to, say, another full diameter, then just lay out and drill another set of holes alongside the first set, and use the rotary file to fair in the pair of holes into a smooth slot. Tack-weld the plugs on the side opposite from that which you'll be drilling. Carbide burr in a die grinder.

I've tried what you want to do with a drill press and I agree with the others. My experience was less than pleasant. The taper will spit out the chuck when you side load it.

The head will flex when you try to drill with the end mill. I couldn't even get decent results in cast iron, let alone steel. I have done that sort of thing by taking small bites with a countersink, no fun, it can work but it can go bad too.

OMG people still think that he is trying to side cut with an endmill in the drillpress! Read the post, think, re-read if needed. He wants to drill overlapping holes with an endmill, he does not intend to put side loads on the spindle. I see no reason that this won't work given that everything is tight, lubricated and that he goes slow.

I don't believe I've ever received so many helpful responses before in so short of a time. Thank you everyone! This is a mount base for a telescope pier. The slots will allow me to rotate the pier to find true north. I need a bit of adjustment since I know I'll never be able to build the pier accurate enough to sit on the studs and line up perfectly with true north. I'm sorry that I didn't provide enough information on my original post.

I knew that I couldn't mill sideways in a drill press. My thought was to plunge new adjacent holes using a mill bit or some other bit you might recommend. I had hoped I could rotate the base, clamp it, and keep plunging holes until the slots were made. I was hoping not to have to use a file to join the holes. I do have a pneumatic die grinder.

Also, I didn't know if it was possible to chuck an end mill in a drill press Chucking an end mill in a drill chuck is NOT recommended. A drill bit shank is not hard, so the jaws of a drill chuck can 'bite' into it, for a firm grip.

An end mill is hardened throughout, and the chuck jaws will not grip as well. That being said Not a good practice, to be sure.

If you have any access to a mill, it would be better to beg or borrow time on one, or pay to have it done. I would like it to look nice when its done. The general message seems to be that my idea won't work. I'm glad I asked before trying it and wrecking the piece. I'll call around tomorrow and see if I can't find a machine shop that will do it for me. Thanks to all who offered their advice. Your help has been most appreciated! I think we've got the consensus that milling cutters and drill presses don't mix so well.

Use a stout clamping washer and your mounting pier will be plenty strong and stable. Page 1 of 3 1 2 3 Last Jump to page:. Bookmarks Bookmarks Digg del. End Mills and Milling Cutters. Square End Mills. Ball End Mills. Chamfer End Mills. Tapered End Mills. Rounded-Edge Square End Mills. Corner-Rounding End Mills. Round sharp corners on the edge of your workpiece. Keyseat End Mills.

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