uh precision tool and we are going to set a work offset uh last video we did a tool all set uh pretty straightforward uh the work offset is also relatively easy to do this there's a lot of ways to make it complicated but we're going to show you a simple quick way to handle the problem um so if you look at the screen uh this is the work zero offset you can have many of them the most common one is g54 most cat cam systems that generate code for you default to g54 right out of the gate but you've actually and you can have multiple offsets in your machine and then run different programs based on uh offsets this offset basically is telling uh the computer where zero is on the work piece and everything is built everything is cut based on that zero so it's pretty important to get that accurate you know sometimes you know if you're removing enough material and your stock is oversized enough it doesn't need to be very accurate but if you're modifying something um and you really and you need to be accurate then this needs to be extremely accurate and and i'm going to show you the tools to to make it very accurate uh right above here you see two offsets we were there in the last video this is work off set so um we use a device it's in the spindle right now uh it's just attached to a cat 40 collet just like a tool would be and it's called a heimer taster taster is the german word for sensor and it has a little precision ball on the end here on a little stick and if you move that it sets the dial here and when you have moved a surface over to zero the dial reads zero and and and you're able to set your zero so we're going to set a work offset that is exactly the corner of this vice right on top of these parallels and it will be this corner and this corner on the back of the vice this is a pretty common thing to do because then you can just set your work um see a piece of aluminum around uh you can set your work into this corner um let me take another block i have this block handy stuff this was what i was machining i would just set this each time into the corner and the machine would know where the bottom uh the bottom and the back and the side of the stock were and could go machine out the part um i like to set my work offsets to the bottom of the stock um that allows me to uh create a precision z in the first operation so i i i can com there's some just some advantages and if you do this for a little bit you'll see that setting setting your work offset to the bottom of stock does give you some advantages and also setting your work offset to a device means that from one part to the next you don't have to reset your work offset uh you just have to set your stock in the vice in the right place so uh and that obviously makes you go along much faster okay back up just a smidge i am going to put it in hand jog one tenth of an inch and i'm going to move in the x and i'm just moving the table over move now right now we're setting the x dimension i'm moving in y down a little more and as we get close we're going to slow down so we're just using hand jog and now i'm slowing down by pushing the one thousandths increment and i'm getting my y set now i'm doing x and i'm coming right in and i've gotta do my y back my vision is a little off sorry be patient with me back in the x and this goes much quicker when you're having a good day um i have a little hard time seeing so we're sneaking in we're moving one thousandths of an inch at a at a click here and we're sneaking up on it now we're moving one ten thousandths of an inch at a click and i'm going to back off and so now that that edge of the vise is very accurately set to zero so now i come back up to the up to the monitor i push my offset button that's here that's going to move it from two offsets to work offsets if i want to move back and just push it again okay and i'm interested in g54 and right now i'm setting my x so i use the cursor key to go down and i am in x if i go over it's y z back to x so i i am now uh i've got my cursor in the right place i've got my spindle in the right place i can go over to part zero set which is a little bit of an awkward word because it's usually called the work offset and it's called work zero offset up here so it'd be nice if those corresponded but uh part zero set is the button to push and uh if you look at the x dimension it changed it was set there didn't change much just a few tenths but um good so now we're ready to do our y and we do our y just like we do our x except for you know y obviously we want to set against the back of the vice so i'm going to move carefully it's easy to wreck your sensor as you can quite literally snap it into the machine and this is also true for your fingers so you have to be careful while you're in there so now i'm moving the y-axis i usually lean in and do this with my head a little closer but there's a video camera in the way right now so now we're back to the y and we're just sneaking up at a thousandth of whack and then ten thousands so this is very fine increment and uh and this is a very precision instrument we are now at zero in the y we come back over the control it's a little refresher so our cursor is in the y we can move it around if it's not there automatically but it's there now and we go to part zero set and we push the button and again it was close to the original value but uh um that's that's how we set the x and y now the z is a little bit more involved um and that is because um of the way we do our two law set um in the end it's simpler so right now i'm just disengaging the measuring device oh i'm gonna push x i'm now just moving over on the x dimension i'll take my one two three block so the reason i'm touching off on the top of this one two three block because all my tools are set from that position so uh everything can work so all the offsets all work from the same position so we're going down in the z now you would never run a tool into this the way that i'm running the sensor this sensor is a spring-loaded thing and it's a different whole different situation now sneaking up on zero so what i've done is is uh i've created a zero uh in the z direction on the top of this block and what i want to do is measure the distance to here and then i want to enter that into my value the way i'm going to do that we're going to look at the control of the camera now is right now i'm in the hand jog i'm going to push the memory button and when i do that please watch please watch this distance to go on the camera so i'm pushing the memory button that takes it out of hand jog and go back to hand jog so now i've zeroed all my distances to go so this is a cheap and easy way to use your milling machine as a measuring tool and so now what we're doing is we will set the sensor to zero on the top of our parallels and when we do that uh we will have the value in z uh to enter into our z offset so i'm going to do that right now i'm going to gently move the spindle up so whenever i'm engaged i only move at a thousandths of an inch once i get disengaged i can speed up and in this case i'm going to move to ten thousandths of an inch so hopefully i can just go straight across a lot of monkeying around see if you're smart you don't adjust your why i did in this video and that's because i'm having one of those days we'll set this over all right i think i got it right there so now i'm moving my thing to one thousandths of an inch per increment and now it's going down all right so now we have the the sensor at zero uh and we've measured the distance the distance the from the top of the block to the top of the piles is 2.5661 it's in the z value here so uh what i can do now is with my cursor now i'm gonna push the offset menu that gets me into the z so i've highlighted um the z value on g54 and i'm going to type in this number right in the input on the machine so i don't have to memorize anything or do any math alls i'm doing is reading this value into the input so you type in uh 2.5661 so there's very little room for error and so i want to write this value into here um if i push enter i will add the two values together okay uh and that's not correct uh what i want to do is push f1 and that'll just put this value in there so i'm just pushing f1 and the value went in so now your z value is set and your work offset is set i think that concludes this video thank you very much