Drum-sander: Difference between revisions

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1.  When at "0" the rear and front drums are at the same height.
1.  When at "0" the rear and front drums are at the same height.


2. To lower the rear drum the knob is turned so that the guide reads in the "+" or positive direction.  To raise the drum the knob is turned so the guide reads in the "-" or negative direction.  It may help to think of it as the "+" or positive number digging "into" the material and the "-" or negative number coming "out of" the material.   
2. To lower the rear drum the knobs are BOTH turned so that the guides read in the "+" or positive direction.  To raise the drum the knob are BOTH turned so the guideS read in the "-" or negative direction.  It may help to think of it as the "+" or positive number moving toward or "into" the material and the "-" or negative number moving away or "out of" the material.   


3. These knobs should always be adjusted so they are the same value though one could have a reason for tilting the rear drum so it's not parallel.  This does not seem like a good idea though.  The right spring on the adjustment knob sticks a bit so make sure that the value actually changes when you turn it.  Just tap or flick the spring a bit.
3. These knobs should be adjusted so they are the same value though one could have a reason for tilting the rear drum so it's not parallel.  This does not seem like a good idea though.  The right spring on the adjustment knob sticks a bit so make sure that the value actually changes when you turn it.  Just tap or flick the spring a bit.


4.  The adjustment setting allows 4 positions for a variety of possible finishes:
4.  The adjustment setting allows 4 positions for a variety of possible finishes:


A.  "0" SETTING - Rear drum even with the front drum will provide a double pass with the front and rear drums using both grits at the same height.
A.  "0" SETTING - The rear drum will be even with the front drum and will provide a double pass with the front and rear drums using both grits at the same height.


B.  "-” NEGATIVE SETTING -Rear roller HIGHER will provide one pass with the front drum only.
B.  "-” NEGATIVE SETTING - The rear drum will be HIGHER than the front drum and will provide one pass with the front drum ONLY.


C.  "+" POSITIVE) SETTING - Rear drum LOWER will allow 2 options:
C.  "+" POSITIVE) SETTING - The rear drum will be LOWER than the front drum and will allow 2 options:


a.  If the bed depth (using the height crank on the right) is set so that the material engages the front drum, the front drum will remove material and the rear roller will remove more material (unlike A above which is equal).
a.  If the bed depth (using the height crank on the right) is set so that the material engages the front drum, the front drum will remove material and the rear roller will remove more material (unlike A above which will remove the same amount of material with each drum).


b.  If the bed depth (using the height crank on the right) is set LOWER so that the material DOES NOT engage the front drum, the front drum will be bypassed and ONLY the rear roller will remove material.
b.  If the bed depth (using the height crank on the right) is set LOWER so that the material DOES NOT engage the front drum, the front drum will be bypassed and ONLY the rear roller will remove material.

Revision as of 18:00, 22 February 2021

Shop Area: Woodshop

Tool: Drum Sander

Requires in-person training: Yes

Procedure Number

UG 110-01, Rev. 1

Date

1/10/2021

GENERAL

There are 2 lock bolts to the adjustment bolts to keep the current setting. Please DO NOT change these settings. There are guides lines on the front showing where the belt should run so it's obvious if it starts to track to the right and curl under which will grind the right roller and bed. If this happens please STOP since the belt is just a large sheet of sandpaper and it will grind out the entire roller support and permanently damage the machine.. Drum Bed.jpg Drum Bed Left.jpg Drum Bed Right.jpg

The adjustment knobs inside the top cover of the drum sander allow for a variety of front and rear drum configurations:

1. When at "0" the rear and front drums are at the same height.

2. To lower the rear drum the knobs are BOTH turned so that the guides read in the "+" or positive direction. To raise the drum the knob are BOTH turned so the guideS read in the "-" or negative direction. It may help to think of it as the "+" or positive number moving toward or "into" the material and the "-" or negative number moving away or "out of" the material.

3. These knobs should be adjusted so they are the same value though one could have a reason for tilting the rear drum so it's not parallel. This does not seem like a good idea though. The right spring on the adjustment knob sticks a bit so make sure that the value actually changes when you turn it. Just tap or flick the spring a bit.

4. The adjustment setting allows 4 positions for a variety of possible finishes:

A. "0" SETTING - The rear drum will be even with the front drum and will provide a double pass with the front and rear drums using both grits at the same height.

B. "-” NEGATIVE SETTING - The rear drum will be HIGHER than the front drum and will provide one pass with the front drum ONLY.

C. "+" POSITIVE) SETTING - The rear drum will be LOWER than the front drum and will allow 2 options:

a. If the bed depth (using the height crank on the right) is set so that the material engages the front drum, the front drum will remove material and the rear roller will remove more material (unlike A above which will remove the same amount of material with each drum).

b. If the bed depth (using the height crank on the right) is set LOWER so that the material DOES NOT engage the front drum, the front drum will be bypassed and ONLY the rear roller will remove material.

Drum Knob Left.jpg Drum Knob Right.jpg

SAFETY

REFERENCE

SuperMax 25x2 Manual

PROCEDURE

TROUBLESHOOTING

                                         END OF THE PROCEDURE