Another HYCO SCROLL SAW thread

[DSEL74]

Based Lyle's info above, I was able to make another piece of the puzzle.

[Lyle]

Excellent work. Nice drawing too. I am really happy to have been some help.
How about the hold down bar/rod? Did you just go with the round or did you mill a flat along its length?

I stole a motor of an old spindle moulder I have at home and fitted it to the scroll saw to see that it all works. It goes great. I pulled out the pins from an old scroll saw blade I had and fitted to my machine. It cuts and runs smooth.
I couldn't get my table up to your standard, but it is clean and smooth without any rust pitting. I'll make a insert for the table this weekend if time permits. Nothing fancy just a flat aluminium or wood.

My drive belt (branded Dunlop Maxpower A31) is old, stiff and has a permanent wobble. Mind the comments that that is just like me!!!
Mainly I think from sitting so long on the pulleys without ever moving.

So I am thinking of replacing it with a round section neoprene/rubber drive belt like they use in sewing machines.
Any comments for or against???
Lyle.

[DSEL74]

I'm considering putting a flat in the rod but haven't got that far. I made it out of stainless and can't get the cheap asian made die to cut the thread
I also domed the top of the rod for looks & safety.





Why do you want to go to a round belt? I would think it be easier to just get a a new Vee belt and that the Vee Belt would have more traction and not be likely to slip.

[DSEL74]

[Lyle]

That looks great.
Your blade tensioner rod has a normal V thread, mine has an acme (square thread). Although when I looked at the brass locknut its' thread seems to be a butchered V thread? But the thread on the rod and mounting definitely is the acme thread.
I wonder which is correct/or year? Would they have changed that during the manufacturing years/model.

[DSEL74]

An acme or other variations on a square thread are preferable from a mechanical stand point in these kinds of applications. If you look at machinery you will see most have them, i.e. all the feed screws on lathes etc. This is basically just a vertical slide.

As for which is original or if the change over the years is anyones guess. Mine all looks original to my machine. Maybe others can chime in on what their machine has.

[DSEL74]

Not sure if the bend in the bracket is tight enough? Marked out, drilled & cut before being chucked in the forge and bent hot with tongs. Cleaned up on the linisher. I wish I had a milling machine.

[Lyle]

Nice work.
Forge? I would have had to use my old vice and just bash it with a hammer.
I investigated getting a round section belt to replace the old V belt, but it was too expensive. So I am waiting for an ebay special!
Nearly back to fully operational.
Except for the air blower.
I saw in one of the phots there appears to be a leather something around the center tube. Anyone got knowledge on that part, so I can get the blower going again???
Thanks.