It’s been a long time since I posted anything on this blog series. I’ve recently made some tremendous progress on the restoration of my bandsaw.
A while back I made a blog entry in which I enquired about locating some upper and lower guide block assemblies for my 14” Cummins-Mack bandsaw. I was not very successful in locating some. So, I made some new upper and lower guide block assemblies out of some ultra high weight molecular polyethylene (UHWMP).
I began, as I always do, by designing them in SketchUp.
Upper Guide Block Holder
Lower Guide Block Holder
Next, I carefully layout where the features are located on the material
Once I have the layout done I move on to the machining process. Here I am set up at the drill press with a cross-slide table and a machinists grinding vise;
Preparing to drill holes in the upper guide block holder
Machining the lower guide block holder was a bit more complex. Here are a couple of photos I took during the machining process.
Sorry for the blurry pictures
When the machining of both parts was finished I mounted them on the saw and gave them a trial run.
Here is a video of some the machining process. I also make a few cuts in a piece of white oak to see how the new guide block assemblies perform.
In the first part of the video you’ll notice that I forgot to lock the table in place. I was making a light cut so no harm done. I locked the table and finished the cut.
The machining of the holders took quite a while. I was able to maintain all of the critical dimensions within .005” (About the thickness of a piece of paper). I am very pleased with how they worked out.
I plan on doing more to make the bandsaw to make it more stable. It seems to vibrate quite a bit.
Stay tuned, there’s more to come.
-- Doug - Make an effort to live by the slogan "We try harder"