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5th June 2017, 10:42 AM #1
Is my thicknesser a dud or am I the problem?
I bought a helical head bench thicknesser about 8 months ago and it's been doing my head in. It doesn't seem to have the power required to feed the timber through itself and requires quite a bit of force to feed the timber through. I don't remember if it was like this to start with but it's been like it for a while.
In the video attached I'm running through some new Vic Ash stock measuring about 150 x 20mm. This pass is only taking a max 0.4mm cut but you would think it was trying to chop off 4mm by the way it's struggling. The manual specifies 1mm cuts per pass for stock 150mm wide.
At first I thought the in and outfeed tables might be tilted up too much and cause friction problems but that doesn't seem to have been the case.
The machine is horrendously loud as well. It's probably twice as loud as my straight knife 8 inch jointer. It's almost too loud through my hearing protection.
Am I doing something wrong? Is it a dud machine? Or are my expectations of a thicknesser just too high?
Many thanks,
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5th June 2017, 10:54 AM #2
First remedy to try is to wax the plates that the timber runs over (including infeed/outfeed). You may find that there is a build up of resins or whatever, so a good rub over with White Spirits or Turps first.
If that doesn't help then there is another problem, which would probably be the feeder rollers. but start with a quick and easy waxing.
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5th June 2017, 11:25 AM #3SENIOR MEMBER
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I am seconding what FenceFurniture said about cleaning and waxing the table
could also be an idea to look at the infeed roller pressure
Rob
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5th June 2017, 02:04 PM #4
I had exactly the same problem with a brand new carbatec. The infeed rollers didn't pull.
They swapped the unit and it's now a champion.
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5th June 2017, 02:08 PM #5
What they said - from your video, it's almost as though it doesn't HAVE an infeed roller !!
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5th June 2017, 02:50 PM #6
Hi,
Maybe the key has fallen out (or never installed) of the sprocket on the input roller.
RegardsHugh
Enough is enough, more than enough is too much.
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5th June 2017, 02:56 PM #7GOLD MEMBER
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In my experience, when the machine gets super loud and stops feeding properly, it means the knives are dull. Full stop. I thought about a hundred different scenarios for why mine was messed up. Engine dying, power supply inadequate, rollers gummed up... none of that. It was the knives. I changed them and it was like night and day.
Whether that's the problem here is hard to say, but I think it would be worth thinking about/investigating.
Cheers,
Luke
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5th June 2017, 03:47 PM #8
Thanks very much for the replies.
I'll try waxing but I'm not sure if that's the problem as the amount of force required to get the timber through the machine almost results in the thing tipping over.
I was also thinking that the knives could be the issue but I didn't think dull knives would result in that much friction. They are the factory ones though... I'll flip them around and see if that makes a difference.
Thanks again.
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5th June 2017, 03:54 PM #9GOLD MEMBER
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You may just consider getting the current knives sharpened. There's a company that does it in Brisbane called Peacock Saws. They're down in Richlands, but they offer a pickup and dropoff service. It was super reasonable when I priced it for straight knives, but helical heads have a lot of individual cutters and they're carbide... They were really nice on the phone. Probably worth calling.
Don't take this the wrong way if it's kind of a "duh" statement, but you know you can rotate the cutters on most helical heads, right? Each cutter usually has four sides so you can essentially start over with new blades four times before you actually need to order replacements.
Hope that helps some,
Luke
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5th June 2017, 04:08 PM #10
Yup, that's what happened to me.....'cept mine weighs 350kgs (it didn't tip, but it did get pushed sideways a bit). There's a fair old bit of force exerted by those rollers.
If you purchased the machine new 8 months ago then I doubt it's the cutters, but you never know. Make sure you only try one remedy at a time though, otherwise you won't know which one fixed it.
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5th June 2017, 04:44 PM #11GOLD MEMBER
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Regardless of the why things are happening. If the board stops feeding, or slows down, YOU MUST get your body weight behind it and push it through immediately. Otherwise the rubber outfeed roller grinds itself away and then it won't push the timber through at all. And possibly you have a rubber infeed roller also and it has been allowed to grind itself away which will be a major factor as to why it is struggling to feed.
I run a squiggle of candle wax on my thicknesser bed everytime I am about to do a wide cut. And only every now and then when I am just running standard widths like 70-100mm..
Don't underestimate the amount of resistance that a blunt helical head can put up. The resistance is an insane amount more than blunt straight knives.
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5th June 2017, 06:19 PM #12Member
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This may be a basic, but you seem to be over one side of the opening. I wonder is the timber running along the side guide and creating drag. Have you tried positioning the timber in different positions in the opening?
Regards
Router
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5th June 2017, 06:54 PM #13Taking a break
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5th June 2017, 07:22 PM #14
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5th June 2017, 07:30 PM #15Senior Member
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its always the tools fault
looking forwards to seeing it resolved, cleaning and waxing the tables will defiantly help, it'll be interesting to see if the blades are dull and if the timber being centered will help with this machine.
i have no issue with feeding left, then to right to work the whole blades to get a bit more life out them.
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