Sanding belt adapter for table drilling machine
for 93mm endless sanding lines
different diameters

Published on March 25, 2019 by thomas
Grinding roller for bench drill from the 3D printer
Stand drill grinding adapter
Stand drill grinding adapter

The article deals with the use of a grinding wheel from the 3D printer in a bench drill. We can therefore use cost-effective sanding belt instead of expensive sanding sleeves.
The initial project was my adapter for the grinding wheels of the Bosch grinder PRR 250.
Small adjustments in the construction allow the use of inexpensive endless grinding wheels. In my case, I used 93mm wide abrasive cloths.

In order to have no stress with hole saws, this adapter comes from the 3D printer.
Adjustments in height and diameter are therefore a breeze.

The abrasive cloths are inserted into the slot and fixed on both sides with a screw.
For mass balance is located opposite a hole where, if necessary, also a screw can be screwed.
The minimum diameter of the grinding wheel should be at 38mm. There is no space left underneath for the slots for attaching the abrasive material.

Further material costs are limited to a typical 8mm ball bearing (inliner), M8 threaded rod and nuts.
The costs are including the 3D printing s less than € 3 per adapter.
Without an abutment, I would advise against use in the bench drill.
If you do not have to pay attention to the bearings, you can of course also use an old cordless screwdriver / drill. A bench drill would be the first choice.

The operating costs are quite low, because we can win about 30 sanding sleeves from a 5m roll in a 50mm roll. If we set for the role 12 € we are at 40 cent per sleeve.
The grinding sleeves of the oscillator grinding machines from Scheppach, Triton and Co will be gladly for 6 € the piece! offered.
Grinding adapter bench drill

The whole thing is of course not as professional as a stationary spindle grinder, but I see the following advantages:

,
Small adjustments in the construction allow the use of inexpensive endless grinding wheels. In my case, I have set on 93mm wide abrasive cloths.

In order to have no stress with hole saws, this adapter comes from the 3D printer.
Adjustments in height and diameter are therefore a breeze.

The abrasive cloths are inserted into the slot and fixed on both sides with a screw.
For mass balance is located opposite a hole where, if necessary, also a screw can be screwed.
The minimum diameter of the grinding wheel should be at 38mm. There is no space left underneath for the slots for attaching the abrasive material.

Further material costs are limited to a typical 8mm ball bearing (inliner), M8 threaded rod and nuts.
The costs are including the 3D printing s less than € 3 per adapter.
Without an abutment, I would advise against use in the bench drill.
If you do not have to pay attention to the bearings, you can of course also use an old cordless screwdriver / drill. A bench drill would be the first choice.

The operating costs are quite low, because we can win about 30 sanding sleeves from a 5m roll in a 50mm roll. If we set for the role 12 € we are at 40 cent per sleeve.
The grinding sleeves of the oscillator grinding machines from Scheppach, Triton and Co will be gladly for 6 € the piece! offered.

The whole thing is of course not as professional as a stationary spindle grinder, but I see the following advantages:

The purchase of a grinding machine is eliminated if you already have a stationary drill. This may be more robust, more versatile and cheaper.Above about 40mm, any diameter is possible.It is available on a wide range of grinding widths and grain sizes.The abrasive material is cheaper by a factor of 15.The structure is simple and can not be broken down to the plastic body.The workload is minimal thanks to the 3D printer.The 3D printer gets something to do again.

When printing, we do not have to stingy with material. These walls should be 3 perimeters (1.2mm) and the fill should be 20%. PLA was perfect for me. Whoever manages to bring the grinding wheel above 50 ° C in operation should use ABS or PETG. The height and, to a lesser extent, the diameter of the grinding wheel can be easily adjusted in the slicer. Otherwise, the model is so simple that you can easily reconstruct it.

In case of wear or damage replace the grinding wheel in time and provide eye protection.
Of course, those who distrust the plastic can also produce the wooden grinding wheel with a lathe or a circular saw.