I’m making some sheet metal enclosures for a project but I don’t have a press brake in the shop so I’m building them by welding the individual pieces. One of the parts has some narrow strips for stiffening and I could not get clamps in to hold the stiffener.
Kant-Twist makes some edge clamping 3-jaw clamps but only in the larger 6″ size. I though about taking my smaller 2″ clamps apart and adding the third jaw, but came up with this simpler solution.
I used some short sections of 1/2″ CRS and some swivel pad 1/4″-20 set screws to make my edge clamps. After the Kant-Twist clamp is secured, these are inserted and nestle in the crook between the jaws. The setscrews are tightened to secure the edge strip for welding.
I debated a long time about whether to make the quill per the Chaddock’s original design based on the A3 magneto bearings, or to redesign the quill around a matched set of ABEC-7 spindle bearings. The A3 bearings are for a 13mm shaft and have a 30mm outside diameter. The smallest ABEC-7 bearings I have are for a 15mm shaft and have a 32mm OD. There is no way to fit 32mm OD bearings in the original 1-3/8″ quill body diameter, so moving to ABEC-7 bearing would also mean moving up to a 1.5″ diameter quill body. Fortunately a 1.5″ quill body can be squeezed into the existing wheelhead casting.
While there are a lot of shared 3D CAD models on the internet, sometime you really need to know that the model is accurate. The only sure way to do this it to create it yourself. This post will help you create accurate involute gears in SolidWorks. Continue reading →
The steps below will guide you in creating realistic and accurate threads in SolidWorks. You probably will not want to do this every time as it will greatly increase the part size and load time, but it is necessary if you plan on 3D printing or molding your part. Continue reading →
The steps below will guide you in creating a realistic and accurate knurl in SolidWorks. You probably will not want to do this every time as it will greatly increase the part size and load time, but it is necessary if you plan on 3D printing or molding your part. Continue reading →
I’ve got a little fun project where I need to create a USB HID keyboard device. I searched high and low for an STK526 mezzanine board for my STK500 development platform so I could work with the ATmega32U2 chip. Failing to find one, I purchased an Atmel AT90USBKey. It seems like a decent, inexpensive little development platform except for one thing. Continue reading →
My TIG welder has a water-cooled torch. Being water-cooled, it is lighter and easier to maneuver than an air-cooled torch because a much smaller water-jacketed welding lead can be used to carry the welding current. The downside is without cooling water flow, the smaller welding lead will overheat and melt the cooling water hose. This can be an expensive problem as I discovered while welding the radiator shroud for my backhoe.
Another big fabrication effort was due to the fact that the water pump on the Perkins sat about 2¾” higher than the previous IVECO pump. Luckily, both were on the crank centerline so all that needed to be done was raise the radiator cowling to match the new fan location.