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Thread: Bandsaw repair success story
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16th July 2015, 09:13 PM #1Senior Member
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Bandsaw repair success story
Hey guys,
Just wanted to share this story in the hope that it might help someone else some day. When I was searching for info on bandsaw repair, there was precious little to find, so here's my contribution:
I took the old rubber tires off my 16" bandsaw with a view to replacing them with urethane. When I did get the urethane tires on, 2 issues became apparent:
1. The blade wouldn't stay on the wheel as there was no crown (some saws have them machined into the wheel, mine didn't)
2. The blade was wobbling/vibrating pretty badly, which led me to realise that the wheels were no longer perfectly circular
I contacted dozens of woodwork machinery places about various options - new vulcanized rubber tires machined and crowned, wheel balancing, grinding/turning the wheels back into concentricity etc. This didn't yield much (except Woodfast in Adelaide), so I started calling and emailing any place that came up when I googled "engineering shop". Many places weren't equipped to do the job - more suited to CNC production run stuff. Many places said they could do it, but it'd cost around $400 per wheel (rather buy a new saw!) Then finally, I came across a place in Altona called Refine Engineering who said they could turn the wheels back into true, machine a crown into the wheel and fit some new bearings for $200 total!
So I've fitted some new urethane tires, and the blade now tracks on the centre of the wheel with no wobble, and the saw is working well again!
Big shout out to Refine Engineering
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16th July 2015, 10:39 PM #2.
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Good there that it has worked out for you and while machining is the best solution there may not have been any need to do this. It is possible to make flat tyres crown sufficiently by using layers of insulation tape between the wheels and the tyres. Usually 3 layers of tape form enough of a crown for the blade to stay on. The first layer of tape is put on at full width and then the second is 2/3rd the width and the top on is 1/3rd the width. I have also done this several times to make belt sanders trackand it works a treat.
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16th July 2015, 10:41 PM #3Senior Member
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True BobL, and I did look at that. The main problem that needed fixing though was the fact that the wheels were out of round - the crowning was a happy bonus!
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17th July 2015, 11:48 AM #4
Good to know there is still some companies willing to deal with the small public one off, at a reasonable rate. Also ones that are able to do basic machine work rather than just punch code into a CNC.
What brand And size of bandsaw was it out of curiosity?…..Live a Quiet Life & Work with your Hands
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18th July 2015, 12:30 AM #5Senior Member
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Saw is a Sher MJ344c, 16" wheels. Dont know how old as I bought it second hand, but it seems to be the most incompatible-with-everything saw there is - none of the aftermarket blade guides, rollers, blocks etc fit it!
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