Making a Screwless Vise

May 27, 2025 Last reply: 1 year ago 8 Replies

I probably won't, but I have been thinking about it.



I am sure of some of you (particularly old school employed machinists) made on during your apprenticeship. I have been playing with the idea making 4-6 of them specifically for my smaller machines to maximize their productivity. I've realized that some of the molds I make on those machines (because they have fast spindles for small cutter) could be cut two piece at a time if I had two matching vises on their tables.



The thing is making things takes time. Steel is slow. I do have a bunch of 4140HT 1x6 (over) bar stock laying out back left over from a press die job. I expected to make more mistakes than I did and I expected to get more repeat business. Sadly my dies have held up better than either they or I expected. Previously they had been getting unknown steel dies from China, and then war broke out in Ukraine forcing that company to change their manufacturing focus.



Anyway, I have (probably not ideal) steel available. The big killer is time. You might say, "Well just buy some." Screwless vises are not as cheap as they used to be, and the size I would most want is an odd in between size, and I would still have to modify them to suit my needs.



I do have one or two ideas that would make a screwless vise better, not the least of which is gettng rid of that cludgey cast pin, with cross pin used in the cross slots to pull down that moving jaw. Replacing it with a one piece part would eliminate one of the problems with the formerly cheap import vises.



I'm not sure I have a specific question. I'm mostly thinking out loud with nobody in the shop to bounce it off of.



Well, I have to head outside and bring the tractor around to fork lift unload a delivery shortly. The CostCo shelving is arriving in...



As I was typing the driver rang my shop intercom.



I don't know if its that way everywhere or all the time, but the communication from CostCo delivery is awesome. Text, call, email.

Your delivery is coming on. Your delivery is coming today between. Your delivery is about to arrive. Your delivery is in the driveway. Your delivery has been delivered.

And on time.

I am sure of some of you (particularly old school employed machinists) made one during your apprenticeship. ...

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I did, part of a milling attachment for my AA lathe before I found better. Shoulder screws in shear as dowel pins attached the fixed and movable jaws to the flat vise bed. Setscrews passing through the movable jaw clamped the work. Drilling, tapping and counterboring the vise bed was pretty easy on the school's Bridgeport. The back of the vise bed is the dovetail for the vertical slide. It was rigid enough for the intended use with aluminum and plastic, as the AA lathe can't cut much steel.

The AA is still useful, I cut off the 1/4" HSS threading bit for the jack adapter ID in the 4-jaw with a Dremel and cutoff wheel on the carriage. The SB has hardened ways, so no grinding on it.

For the carbide grinder project I cleared some space by moving out a 3 phase

1/2HP 220V pedestal grinder that was part of an auction mixed lot I bought for the scaffolding, for $10. The megger I acquired later showed its insulation safe to 500V, worth checking with discarded motors. The connection that made it run as a test was AC from a 0-280V Variac on two leads with a 12uF motor run cap to the third. At around 120V and 4A it spun slowly and gradually accelerated until suddenly taking off to normal speed, where the current fell almost to zero. That's not a proper static converter but it was enough to test the motor and bearings.

I probably won't, but I have been thinking about it.

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I've used a piece of bar stock snugly fitted into and protruding above a tee slot as a vise fixed jaw of sorts. The mill was an RF-31 on which I'd found that the tee slots weren't quite parallel to table travel, so I milled the protruding portion of the stock parallel to X after shimming it up a little. The goal was a vise locating key that corrected the error, not relevant here.

Two such tee slot bars could hold crossbars that form the center spacer/backstop and clamping sides of a double vise. With more spacers you could cover the table top with mold blanks. The spacer/backstops could index on the back of the table to make the slot bar fit less critical.

In fitting the bar I found that the tee slot width wasn't constant either. It was close enough to file. That RF-31 from MSC was accurate to no better than 0.005", usually good enough for electronics packaging. More demanding jobs went to my Clausing.

My first mill vise was a piece of aluminum bolted across the table of my Taig, a flat strip of aluminum, and a piece of aluminum angle. I'd run bolts through the angle, slide the strip under the flat leg, push the vertical leg up against the stock and tighten it down forming a lever clamp on the edge of the stock. This allowed me to machine the entire face. I'm sure you get it, but if not I could pencil up a sketch pretty quick. I think the only reason I didn't send stock flying is because of the very low cutting loads.

My first mill vise was a piece of aluminum bolted across the table of my Taig, a flat strip of aluminum, and a piece of aluminum angle. I'd run bolts through the angle, slide the strip under the flat leg, push the vertical leg up against the stock and tighten it down forming a lever clamp on the edge of the stock. This allowed me to machine the entire face. I'm sure you get it, but if not I could pencil up a sketch pretty quick. I think the only reason I didn't send stock flying is because of the very low cutting loads.

Bob La Londe

------------------------ I have some edge grabbing clamps that descend at an angle on the base block, like this but low Enco quality:

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My suggestion could have studs threaded into the tapped bar at the bottom of the tee slot that extend high enough for hold-down clamps. I don't know your setup so I kept the description brief, I think it could work with tee slots closed at the end, using short bars inserted via the tee nut access wells and links between them.

My first mill vise was a piece of aluminum bolted across the table of my Taig, a flat strip of aluminum, and a piece of aluminum angle. I'd run bolts through the angle, slide the strip under the flat leg, push the vertical leg up against the stock and tighten it down forming a lever clamp on the edge of the stock. This allowed me to machine the entire face. I'm sure you get it, but if not I could pencil up a sketch pretty quick. I think the only reason I didn't send stock flying is because of the very low cutting loads.

Bob La Londe

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As I imagine it the strip under the horizontal leg's outer edge tilted the vertical leg of the angle against the stock when you tightened the hold downs.

Eggszakary! Bob La Londe

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Absotively, posilutely.

On a sadder note, say a few appropriate words for old Phil of Duck Dynasty who just died.

I remember the former teacher for informing us that Columbus' three ships were the Nina, Pinta and Santa Monica.

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