Now that my bandsaw is up and running I can start adding some things to it.
First though… Group “large” saw shot. I’m planning to sell the hacksaw to a friend and figured I’d get the group shot while I can.
I made a wooden stand in for the saw so I could properly size and layout the metal for the base. Most of the base will be made of 3″ angle iron I had as well as some 1-1/4″ for the back side. I used the 1-1/4″ because I ran out of 3″ and there is a bracket on the saw that would hit the 3″.I welded on three casters that were rated for above the weight of the saw. The back two are fixed and the front swivels. I’ve found that using fixed casters makes it easier to move stuff around in a straight line (as you’d expect). I also added a bracket on the front of the base with a hole in it to allow me to move the base with a rod if needed.Here’s the base welded up and ready for paint.While waiting for paint to dry, the next change I made was upgrading the brush. If you’ve read my previous posts you’ll remember that I temporarily mounted a brush on the underside of the blade. I liked the brush since it’s brass and cheap…especially if you buy them in bulk on Ebay. After doing a little bit of thinking, I decided for a design that would pinch the blade and allow for the clamping pressure to be adjustable. The picture below shows what I ended up with. The main part is a piece of 3/4″ square tubing and there is a bolt with spring for adjusting the clamping pressure. It mounts with a hole in the middle and the design allows the whole assembly to tilt a little bit if needed. Apologies for the poor pic.After testing the brush assembly I painted it and trimmed the ends of the brushes down. I also put a few pieces of thick leather on to act as wipers. I mounted one on both arms to catch any bits of metal that make it past the brushes.With the base finished I lifted the entire saw with the engine crane and set it onto the base. The base allows the saw to be easily moved as I hoped. The next thing I wanted to do was add an oiler to the blade. The oiler applies a small amount of oil and is adjustable with a small valve from an aquarium. Take a look below. Looks great right? Oh well then you’ll be glad to hear this is just the prototype.The bottom bit of the oiler is made up of some brake line tubing which is easily bendable. The ends of the tubing is cut at and angle is positioned so it sits next to the blade but doesn’t contact it. They’re also positioned sightly above the teeth so that the teeth will get oil instead of just the top of the blade.This view better shows the positioning of the ends of the tubing.I’m sure the thing plastic bottle would probably work but it doesn’t look so great. To replace it I found a Nalgene bottle online that was closer to what I had in mine. Yes, to my shock, they make more than just the Nalgene bottle you’re thinking of. This one was rectangular and made for a lab from what I saw. To hold the bottle I bent and welded a holder for it out of steel. I used a washer for the bottle cap to sit on which was just the right size. Here’s the bottle and bracket in place. The bracket sits in the slot that the arms move in which allows the oiler to be repositioned if needed. I also drilled a small vent hole in the bottom (now top) of the bottle.To get the oil out, I attached a brass tubing barb to a hole in the cap and sealed the edges with some RTV.
Here’s a pic of the aquarium valve I mentioned earlier. Each side of the oiler can be adjusted independently though I’m not 100% sure it is required.
As I was working on all this I noticed that the saw was starting to slowly drop down when I had the valve on the hydraulic cylinder closed. I did some testing and am pretty sure oil was seeping past the piston. I thought about rebuilding it but decided to switch to some heavier weight hydraulic oil (46 wt) oil first. Happily it seems to be working but I’ll have to keep an eye on it. It also has the added benefit of making the valve less sensitive as you’d expect.
Now the only thing I have left is to make a pan to catch all of the metal bits from sawing. That’ll have to be in another post though.