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Richard,
My springs for the infeed and out feed rollers only have about 7-8mm of compression in them, therefore the rollers should sit between 3 and 4mm below the block,
?this helps to ensure that any slightly undersized or tapering pieces do not come back at you and the anti kick back fingers.
With the limited compression of the springs this also limits the maximum cut the you can try to take? before the infeed roller wont allow the timber to actually go through the machine.
As to setting the pressure, check under the threaded plug that retains the spring on the top to make sure there are no shims or washers in there, its some thing people have done to compensate for worn or damaged springs in the past.
Also make sure that the springs and other parts are not choked with dust especially on the internal side of the machine as it is not sealed from the rest.
It is also useful to check that the springs are also the same height when out of the machine, or at the very least the pairs are the same height.
The lower bolts control the height and level of the roller in relation to the cutting circle of the cutter block.
Correctly set the top of the spring should be lightly in contact with the top plug not much more than 1/2 turn.
What the correct pressure is largely depends on what you are using the machine for, stating the obvious if all you are running is small sections in softwood then a lighter pressure will be appropriate, conversely if you are putting 12" wide hard wood through
heavier pressures are needed.
The only real adjustment for pressure is to raise or lower the whole roller, you can try packing the springs with shims if you want lower rollers and higher pressure.
But bear in mind the table is centre column mounted so at some point the pressure can be enough to deflect the table.
Correctly set I would expect to have to take 1.5mm off a 50mm wide piece of softwood to clear the infeed roller marks and between .5 and .7 of a mm on a similar width piece of European oak and that is about the best guidance I can give.
All in all it's another balancing act especially if you are using a wide range of timbers.
I trust this helps.
From: [email protected] <[email protected]> on behalf of richard_markham@... via groups.io <richard_markham@...>
Sent: 13 January 2021 12:14 To: [email protected] <[email protected]> Subject: [FOG] BF6 Planer thicknesser roller adjustment #jointerplaner ?
Me again! Checking out the planer thicknesser.
I'm finding that the feed rollers might need adjustment as they are a good way lower than the cutter knives and I think they are over clamping the timber. Needless to say, no mention of this in the manual... I can see there is a large recessed nut on top the roller bearings, I assume this retains the springs. On the underside, through the rectangluar access hole, I can see a bolt and nut. What is the recommended setting for the rollers and how are they adjusted? Cheers! |
