i need help drilling 1 inch holes

[5030]

John:

A 36 and a 60 are fine. This summer, we will do "drill 101".

A really neat trick for truing a bench grinding wheel is to get a single point diamond dresser (1/2 carat will do) and make a collar that will slide on the shank of the dresser and is secured with a thumbscrew. Adjust the collar so the dresser just touches the wheel when the collar is against the tool rest on the grinder. Proceed to run the dresser (collar riding the tool rest) back and forth across the face of the wheel, keeping the dresser shank at 90 degrees to the face.

As bench wheels aren't as friable (the grains of material get loaded with metal and loose their ability to remove the metal on the part you are grinding) as a surface grinding wheel, the wheel needs to be "touched up" often, revealing new grains to remove the metal from the object you are grinding. The "hot setup" for that is a sharpening stick which is a bonded block of material expressly made for that purpose.

I'm giving away my secrets...................... /forums/images/graemlins/grin.gif

 

[escavader]

Can you believe no one including the local auto parts stores can even order the belt fot that press.I went to sears they wrote a phone # down ,I ordered 2 belts,they are 5/15by 26,30 bucks!.and im done for at least a week,unless i want to shell out more!The next press i buy will have an automotive3/8 sheaves on it.Ididnt dare buy a 3/8 and try to cram it on there,there is no adjustment,and i probably would have wasted 5 or 6 bucks...oh well ill work on something else for a week.
ALAN

 

[5030]

Leave to Ron Hall. "Good luck".....

You need a "Make a Belt". I use them all the time. Do a Google search for a distributor. I get mine from Enco.

Personally, I would not buy Sears anything.

 

[ronjhall]

Do not ask me how I knew he would need lots of luck finding the belt today. /forums/images/graemlins/blush.gif
I have one of those belts for my boat. Do they make a narrow belt like Alan needs.

 

[5030]

Ron:

I believe so. Watching the game this evening? Hope Wayne County got the roads cleaned up. That would be a bad thing if they didn't.

We only got a dusting though the wind is blowing pretty hard. I'd hate to think of 8-10 like NOAA said last evening. With the wind, we'd have 10 foot drifts and the M9 would be out there blowing the road open as Monroe County prefers to stay home until the bump shops are full. /forums/images/graemlins/grin.gif

 

[5030tinkerer]

Okay, now I know how people feel when I spout off a few computer term acronyms. /forums/images/graemlins/blush.gif Can someone clue me in on some of these terms:

piloted annular cutter
worried
offhand sharpen (is this just hand sharpening?)
web, web thickness
heel of the drill
proper clearance angles
relieved twist drills
Cutting lubricant – Is this the same as cutting fluid from companies like Tapmatic?
HSS – WOW! I knew one. High Speed Steel /forums/images/graemlins/grin.gif
magnetic drill press – how does this differ from a regular drill press?
Slugger type magnetic drill press – again, what’s the difference?
Silver & Deming drill bits – how do these differ from HSS or carbide bits?
shell type bits – Am I correctly assuming that these are hollow core bits and that you just drip your cutting lube into the hole for direct application to the piece to be cut?

Thanks guys,

Ed

 

[MadReferee]

Here are a few:

According to This Reference:
Annular cutters are designed to increase through hole drilling productivity while improving hole accuracy. Rugged enough for structural steel fabrication, annular cutters adapt quickly and easily to most magnetic base drills, drill presses, milling machines and CNC machining applications. Annular cutters out perform twist drills and older style annular cutters eliminating pre-drilling, step drilling and hole finishing operations. Solid pilot locates cutter position, guides coolant to cutting edge and retracts into cutter during drilling cycle. Proven alternating tooth geometry minimize kerf area and evenly distributes chip load to multiple cutting edges reducing horse power and drilling feed pressure. Scrap material advances away from cutting edges, forming an easy to remove nest of chips above material surface. annular cutters are ideal for most drilling applications including elongating holes and trepanning operations. annular cutters are manufactured from premium high-speed steel and specially heat treated for cutting edge toughness increasing tool life between sharpening.

========================
According to several sources:
Silver and deming drills are general purpose drills with a reduced shank to fit into a standard chuck, typically 1/2". Most silver & deming drills are 6" long with a 3" flute length. I have also seen them called blacksmith drills or prentice drills.

Silver & Deming Manufacturing Co.
Salem, Ohio

This company could trace its history back to 1854, although the "Silver & Deming" name does not date back that far. The titular heads were Albert R. Silver and John Deming. In the later history of the company, Emmor W. Silver was a principal; he was perhaps a son of Albert.

Silver & Deming was created in 1867 or 1868 after L. A. Dole had died, and Dole, Silver & Deming was renamed. In about 1874, Silver & Deming became Silver & Deming Manufacturing Co. In 1890, the company reportedly split, with one part becoming Silver Manufacturing Co.

Silver & Deming made a variety of machines that were primarily aimed at wheelwrights: hob-boxing machines, spoke-tenoning machines, etc.

Silver & Deming apparently invented the large-size twist drill bit with a turned-down shaft so they can be used in a chuck smaller than the bit's cutting diameter. They did not patent this idea, so the idea was quickly copied by others, but these bits are still called "Silver & Deming drills".

 

[CTyler]

I had to drill a number of 7/8 holes in 3/8 plate. Used a punch to mark the starting point and provide a place to keep the bit from walking. I used a Unibit and set the drill press at the lowest RPM. Used lots of heavy cutting oil and cleaned the cuttings often. The last one cut just like the first, no worries. Heat is your enemy and speed creates heat....go slow.

Also the Unibit will center itself in whatever hole you have drilled already.

 

[5030]

5030Tinkerer:

You have mail.

 

[andyfletcher]

Use hardened steel hole cutters made for that job. But make sure it doesn't wobble and you feed slowly has they're not tolerant of bad use. If your drilling by hand use a wooden jig so the cutter doesn't wander and apply even pressure. Float levels on the better drills are great for this. Best is drill presses.

Use lots of cutting oil, and never use them without it.

I have found that even with the best care, I can get a short life with these, but all the same are way better than drills that need to remove all material to advance into the work. I can get one to last a complete project which I figure pays for itself.

Fletch