Today we’re machining the scraper shank. One end get a tapered tang for the handle, and the other gets a pocket to hold the insert and a threaded hole for the clamp. We’re milling these features on the G0704 CNC … Continued

Today we’re starting on the machining of the hand scraper. One of the more interesting workholding challenges is the threaded tang. We need to hold it in a 4-jaw chuck in the lathe to take a massively interrupted cut, but … Continued

Today we’re looking at the next project here in the shop: a hand scraper. We look in detail at the design, the carbide inserts and the material we’re going to use. If I have carbide inserts available, they will be … Continued

Today we’ll spend a few minutes tuning the new VFD acceleration and deceleration times. We’ll talk about what limits startup and braking speed and do some experimenting to find the best settings for this lathe, motor and VFD combination. If … Continued

Today we’re finally installing the electronics in the Hammond box, on the wall next to the lathe. We’ll connect the control wiring and run the lathe with the VFD for the first time. If you’d like to do this upgrade … Continued

Today, we’re putting all of the electonics into a Hammond Box to protect them when they’re installed near the lathe. We’ll start with a bare CHKO (NEMA Type 1) enclosure, cut holes for ventilation and cables, mount and wire everything … Continued

Today we’re swapping out the stock motor in the G0602 lathe for a new 3-phase motor that will work with the new VFD. This turned out to be much harder than expected because a couple of the motor mounting studs … Continued

The noise generated by our new Teco-Westinghouse L510 VFD is causing problems with the video gear in the shop. Today we’re going to solve the problem with a line noise filter and a handful of ferrites. We’re also going to … Continued

Today we continue with the lathe VFD upgrade. We walk through all of the programming of the VFD for external speed and direction control, we change settings to make the motor run smoothly and quietly and we even hook up … Continued

Today we’re starting on a 3-phase motor and VFD upgrade to add variable speed to the Grizzly G0602 lathe.  We talk though the specifications of the motor and the VFD and wire everything up on the bench for testing.  I … Continued