I just purchased an almost new General 15-250 drum sander after doing the i
nitial drum set up I cannot get the rear drum on the right side to raise en
ough I have it level but I cannot get it high enough so as for now the fro
nt drum is not touching the wood at all
Is there any more adjustments I need to do
On Mon, 29 Apr 2019 07:17:33 -0700 (PDT), email@example.com wrote:
I would think so, since it isn't working properly. If you have done the
below adjustments correctly then there is a problem. Is the front Drum
parallel? If you don't see anything obvious I would call General
From the manual...
For optimal results, the rear drum, ,should be set fractionally
lower than the front drum, ,by the depth of
the grit of the paper on the front drum, .
- The front drum is factory set parallel with the conveyor
table and needs no further adjustments.
- The rear drum is micro-ajustable. It can be slightly
raised or lowered at each end and must be kept
parallel to the table.
ADJUSTING THE HEIGHT OF THE REAR DRUM
To set the rear drum to the correct height proceed as follows:
1. Place two gauge blocks (not included) on the
conveyor belt, positioned one under each end of
the front drum (with the sanding belt installed).
Note: To achieve parallelism with the front drum, any
gauge blocks that are used (whether purchased or
shop made) must be a matching set and must both
be at the same height.
2. Raise the table until the gauge blocks barely
touch the drum.
3. To access the sanding belts, unlock the drum cover
latch, , and open the top cover. The sanding
belts are tightly wound around the drums and attached
at both ends by spring loaded clamps, .
4. Remove the sanding belt from the rear drum.
5. Place the two gauge blocks, one under each end
of the rear drum.
6. Using the 6 MM T-Handle Allen wrench provided,
slowly turn the micro-adjustment screws located
at each end of the drums, , counterclockwise to
lower the drum, , until it barely touches the
7. Remove the gauge blocks and reinstall the sanding
belt on the rear drum. The rear drum is now set lower
than the front drum by the thickness of the sandpaper
on the front drum.
8. Given that the rear drum must be lower than the
front drum only by the depth of the grit on the paper,
(and not by the thickness of the paper including
the grit, ), turn the micro-adjustment
screws clockwise, approx. 1/8 of a turn as per the
indicator dials, . This will raise the drum by the
fraction corresponding to the depth of the paper
without the grit,
Note: You will not get an optimal result if the rear
drum is not low enough. On the other hand, attempting
to remove too much material in one single pass
may result in workpiece burn problems or in motor
Assuming that you do not have the manual - it can de DL'ed as a PDF with
Here is the TinyURL https://tinyurl.com/y6oto8yl or, if that frightens you
here is the whole thing.
On Tuesday, April 30, 2019 at 6:25:06 AM UTC-4, Spalted Walt wrote:
I adjusted the drums as directed in the manual but the right side of the re
ar drum will not adjust any higher
As now I can’t get the front drum to touch the material without cra
nking the feed table too high and stall the feed table.
Any tips ?
On Tue, 30 Apr 2019 06:18:21 -0700 (PDT), firstname.lastname@example.org wrote:
OK - things were working - the front drum was touching the material - then
you started making adjustments - and - now you cant get the front drum to
touch the material without cranking the feed table up too high and stalling
the feed table belt because the rear drum is too low.
Why were you adjusting the rear drum?
To be of much help we will need more of the story
On Tuesday, April 30, 2019 at 11:24:23 AM UTC-4, Jerry Osage wrote:
rear drum will not adjust any higher
cranking the feed table too high and stall the feed table.
t drum to
When I bought the machine recently it had no sandpaper in it so I followed
instructions in the manual applied sandpaper to the front roll I just did
it to my blocks that I just did the back roll but in order to get it I just
did parallel to the front row I needed to raise it up .
The left side of the role I have lots of adjustment up and down but the rig
ht side on the microwave just screw it will not come up high enough
It seems that I ran out of adjustment on the right side when I tried bringi
ng it up 1/8 of a turn to allow for sandpaper grit
The machine works fine but when I ran material through it it was only sand
ing on the rear or secondary drum the 1st drum is not touching
Thank you for all your help
On 4/30/2019 11:25 AM, email@example.com wrote:
General is a real outfit; I suggest contacting them directly.
I've no personal experience with their machine so can't comment directly
on just what might be the specific cause behind the symptoms altho
perhaps the previous owner did something to cause an issue? Do you know
whether that person ever had it set up correctly or not?
I’m not sure the machine has only been used just a few times it is
in new condition there was no paper on it when I bought it he was an older
gentleman that had it , it was out of adjustment when I bought it so I we
nt through the procedure of setting it up as specs call for but I cannot ge
t the rear drum on the right side to adjust high enough I’ll go bac
k and work at it more tonight
Thank you for all your help
On Wednesday, May 1, 2019 at 10:20:48 AM UTC-4, firstname.lastname@example.org wrote:
s in new condition there was no paper on it when I bought it he was an olde
r gentleman that had it , it was out of adjustment when I bought it so I w
ent through the procedure of setting it up as specs call for but I cannot g
et the rear drum on the right side to adjust high enough I’ll go ba
ck and work at it more tonight
Hey, here are a few periods:
. . . . . . . . .
It appears that you have run out, so I'm willing to share some of mine.
You're welcome. ;-)
On 5/1/2019 9:20 AM, email@example.com wrote:
Well, on occasion even the good manufacturers have a lemon so you can't
completely rule out there was an assembly problem...or that it somehow
got damaged in shipping or the like.
I'm not sure whether it was shipped fully assembled from factory or
whether required some user/dealer assembly; there's another place
something could have happened if so.
Or, could have been mishandled anywhere along the route--it's a large
machine so opportunities there for somebody to have slung a sling (so to
speak :) ) under the drums and lifted, for example, bending a shaft or
Just all kinds of possibilities besides perhaps just a simple oversight
of some sort but that is impossible to diagnose remotely without the
expert from the factory.
Did the elderly gentleman indicate it ever functioned properly--or would
he have even known?
I don’t believe there has been any shipping damage that I can see
the older gentleman was a machinist who is now in a home unfortunately that
is one possibility I had not thought of though
I will do some further inspections on the drums and the level of the table
to make sure nothing is bent that is a good thought thank you
On Wed, 1 May 2019 19:05:51 -0700 (PDT), DerbyDad03
You're wasting your keyboard clicks (you'll be sorry when it doesn't
anymore). This sort gets off on annoying those who want to read what
he's written. If he can't be bothered to write for his reader, I
can't be bothered to read what he's written.
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