Shop Made Tools

[alanganes]

These are made with pencil and a drawing board. I have a drawing program on my PC, but I do not use it, because it is too complicated for me
I'm old school.🤗

Looking at the work you produce, I don't think there are too may things that are "too complicated" for you!

[rcaffin]

NIST g-code, ISO g-code, DIN g-code - they are all very similar, except that you can get PDFs covering NIST g-code from the web, but ISO want many dollars for their version.
I suspect from what I have been able to find that the ISO and DIN versions are simply fervent nationalistic repackagings. I have seen that before.

Cheers
Roger

[Bruno Mueller]

Looking at the work you produce, I don't think there are too may things that are "too complicated" for you!

Oh yes, everything that has to do with computers, I have little knowledge about. If I have a problem, I always have to consult my brother. Either he solves the problem via remote maintenance, or I visit him, or he comes to me. He can fix most of it via remote maintenance.
At the personal computer I am only a user. I have already dealt with the drawing programs. But that is too much trouble for me to learn it all again.
I prefer to go to my workshop and torture the lathe and milling machine.

[pensioner]

Oh yes,

Tell me, what is the reason that you chose the "dovetail" for the movable jaw of the yew? It seems to me that the rectangular shape of the sliding guiding surfaces in the mating surfaces of the vice is better than the "dovetail". Rectangular ones better resist the lifting of the movable yew jaw and do not need a hatch to secure the clamping screw nut. I think so.

[rcaffin]

Two very different styles of vices I think.
The dovetail ones have an inline screw; the ones with a rectangular sliding surface are usually 'instrument' vices with a very different screw, going diagonally down.
Or so it seems to me.
Cheers
Roger

[pensioner]

Two very different styles of vices I think.
The dovetail ones have an inline screw; the ones with a rectangular sliding surface are usually 'instrument' vices with a very different screw, going diagonally down.
Or so it seems to me.
Cheers
Roger

I have Swiss yews and there are homemade ones (I made them like Swiss ones), their design is the same as Bruno did, everything in these structures is the same only the sliding surfaces of the sliding jaw are different, and I wondered how these types of yew guide surfaces differ in work and how quickly wear of rubbing surfaces appears. Here on page 259 in message # 3882 I showed my yews, it can be seen that there is almost no difference in designs.

[Bruno Mueller]

The problem with the block guides is the adjustability. With the dovetail guide, an adjustment bar is sufficient to adjust the play in the guide.
For the block guides, a minimum of three adjustment bars are required to eliminate any play.
The vice is adjusted so that the movable jaw, when clamping, pushes upwards as little as possible.
Measured with a dial gauge it was about 2/100mm.
This is a very good value for such a system.

For this reason this type of guide is also used on milling machines.
Block guides always require several adjustment possibilities, but this also increases the possible sources of error.

[pensioner]

The problem with the block guides is the adjustability. With the dovetail guide, an adjustment bar is sufficient to adjust the play in the guide.
For the block guides, a minimum of three adjustment bars are required to eliminate any play.
The vice is adjusted so that the movable jaw, when clamping, pushes upwards as little as possible.
Measured with a dial gauge it was about 2/100mm.
This is a very good value for such a system.

For this reason this type of guide is also used on milling machines.
Block guides always require several adjustment possibilities, but this also increases the possible sources of error.

Thanks Bruno, now I understand - the reason is in the ease of adjusting the gap. In my yews, I adjust the gap by grinding on a surface grinder, and it takes more time.

[Ironbearmarine]

Oh yes, everything that has to do with computers, I have little knowledge about. If I have a problem, I always have to consult my brother. Either he solves the problem via remote maintenance, or I visit him, or he comes to me. He can fix most of it via remote maintenance.
At the personal computer I am only a user. I have already dealt with the drawing programs. But that is too much trouble for me to learn it all again.
I prefer to go to my workshop and torture the lathe and milling machine.

When i worked for other people, that “job” thingy, i used AutoCad and Solidworks and and Anilam and Mastercam and could g-code on the fly, but in my own shop, a sketch pad, a white-board, calculator and caliper seem to work well enough. Might install a DRO on the mill one day though.
That 3d printer, however, is going to drag me back into digital modeling it seems.

[Raul]

Scissor Clamps Circa 1979


I told him I wanted my clamps back or I would go to mgt. to get them.

And that's pretty much why I always carve my name on my tools. It's near impossible to resist a gentle request for the return of your tool when the owner's name is plain on face of it.

[rcaffin]

Hi pensioner
What is a Swiss yew (apart from a tree)? I am not familiar with the term.
Cheers
Roger

[Bruno Mueller]

pensioner,

Every sliding guide is subject to constant wear and tear. To compensate for this wear, there are these adjustment bars. For the block guide, a minimum of three adjustment bars is therefore required. The dovetail guide requires only one bar.
Even if you have finely ground your guide with the surface grinding machine, you will need to readjust the guide at some point.

[pensioner]

Hi pensioner
What is a Swiss yew (apart from a tree)? I am not familiar with the term.
Cheers
Roger

I meant that the yews that I repeated were made in Switzerland, this is not a proper name, but the country of origin of the yews.

[pensioner]

pensioner,

Every sliding guide is subject to constant wear and tear. To compensate for this wear, there are these adjustment bars. For the block guide, a minimum of three adjustment bars is therefore required. The dovetail guide requires only one bar.
Even if you have finely ground your guide with the surface grinding machine, you will need to readjust the guide at some point.

I understood the reason for your decision. In my yews, I made rectangular guides because I think that they better resist the lifting of the movable jaw of the yews under heavy loads. In yews, it is important to minimize the lifting of the movable jaw of yews, and some movement of the jaw "in azimuth" does not particularly interfere, allowing parts to be clamped in yews with some non-parallelism of their surfaces. The wear of the rubbing surfaces is not linear, their flatness is lost with wear, and restoration of the surface of rectangular yew guides using flat grinding seems to me to be an easier job than restoration of the guide surfaces in the dovetail joint. I think so.

[Arcane]

I understood the reason for your decision. In my yews, I made rectangular guides because I think that they better resist the lifting of the movable jaw of the yews under heavy loads. In yews, it is important to minimize the lifting of the movable jaw of yews, and some movement of the jaw "in azimuth" does not particularly interfere, allowing parts to be clamped in yews with some non-parallelism of their surfaces. The wear of the rubbing surfaces is not linear, their flatness is lost with wear, and restoration of the surface of rectangular yew guides using flat grinding seems to me to be an easier job than restoration of the guide surfaces in the dovetail joint. I think so.

If you think you are being clever and humourous with the use of "yews" you are sadly mistaken.