Tormach Fab Lab: Workholding with V-Blocks

Ground V-Blocks are a handy tool for workholding, especially when paired with a machining vise. You can use them to hold round bar, square bar, and they are also great for supporting end work.  In our latest episode of Tormach Fab Lab, Mike C. points out some tips and tricks to keep in mind when using V-Blocks. [youtube]http://youtu.be/cDhGSZ7jp7Y[/youtube] You can purchase the V-blocks used in this video here:  Buy V-Blocks for Tormach More Tormach Fab Lab Videos:

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Tormach Fab Lab: Working with a Quick Change Tool Post for Lathe

In this new Tormach Fab Lab episode, we're showing the basics to setting up a Quick Change tool post on a CNC Lathe. [youtube]http://www.youtube.com/watch?v=jPfVib83-B4&list=PLrWhN_9rAUJ55kfT2q3iaZpod1LuepEr_&feature=share&index=7[/youtube]   The QC toolpost kit for our 15L Slant-PRO CNC lathe is size CXA, which holds 3/4" tools.  There are many different styles QC tool holders that you can purchase for this post, but the three used the most are:

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Tormach Fab Lab: How to use a Companion Horizontal Spindle

  You can set up a companion spindle with our Horizontal Spindle Arm Mount for milling in the XZ (G18) or YZ (G19) plane.  This can be a great technique for doing light milling on the end of a very long workpiece.  In this episode of Tormach Fab Lab, Mike C. demonstrates how to get this setup right.   [youtube]http://youtu.be/0oBlsirN4t8[/youtube]   You can now also model this setup in SprutCAM by taking advantage of the brand new Tormach PCNC machine definitions in SputCAM 8.  Here's a video that shows how to get that started as well.   [youtube]http://youtu.be/r8l99stgL8s[/youtube]   Want to try this out for yourself?  We've got the Kress High Speed Spindle and all of the mounting clamps and brackets for sale here: Tormach eStore - Companion Spindles More Tormach Fab Lab Videos:

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Tormach Fab Lab: Using a 2-Jaw Chuck

Although not nearly as common as 3- or 4- Jaw chucks, a 2-Jaw Chuck can be quite handy for certain 4th Axis jobs. The jaws on a 2-Jaw chuck are opposite each other (obviously!) and they are driven by a scroll plate, just like the jaws on a 3-Jaw chuck. They are typically used in 2 scenarios:

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Fab Lab Skill Builder: 4-Jaw Chucks

A popular tech line request is  for more information about setting up a 4th axis.  Earlier, we showed how to true a 4th axis to the mill motion using shims and how to set up a 3 Jaw chuck.   In this new video, Mike  C. demonstrates  how to set up a 4-Jaw chuck on a 4th axis.  He also shows basic tail stock setup.

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Fab Lab Skill Builder: How to Use a Coaxial Indicator

There are lots of ways to find the center of a hole.  In a previous Fab Lab Video, we showed how to do this with an essential shop tool, the dial test indicator. [youtube]http://youtu.be/uqLT_fkiTo0[/youtube] Mastering the dial test technique can take some practice.  Although it can be very accurate, its not a particularly fast method. On our Tormach PCNC mills and many other CNC mills, you can also use a touch probe, such as our passive probe or digitizing probe.  These devices interface to the Tormach Machine Controller and can also be used for locating work offsets, tool setting, and much more.  They are both versatile and fast.  When correctly calibrated, they are very accurate as well. A third way is to use a Coaxial Indicator.  Coaxial Indicators are a very easy and accurate way to  find bore or shaft centers.   We now carry the Haimer Centro Coaxial indicator, which is a premium quality Coaxial Indicator, made in Germany.  It has a large dial and a variety of interchangeable tips available that can be swapped out  depending on the size of the bore or shaft that is being indicated.  These work equally well on both CNC and manual machine tools.  They are easy to use, even for inexperienced operators. Here's a short video on how to use the Haimer Centro. [youtube]http://youtu.be/NONye1DpRIU[/youtube]

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