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Belt Sander: Difference between revisions
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'''Here are two more professional approaches to using sanders for shaping:''' | '''Here are two somewhat more professional approaches to using sanders for shaping:''' | ||
An open disk sander: | An open disk sander: | ||
[[Image:teddy_shaping.jpg|thumb|center|450px|[[Teddy Knudsen]] shaping, courtesy Lars Kiel]] | [[Image:teddy_shaping.jpg|thumb|center|450px|[[Teddy Knudsen]] shaping, courtesy Lars Kiel]] | ||
A shot from the shop of Tom Eltang , showing two dedicated disk sanders, and a commercial flexible belt sander: | |||
[[Image:eltang_sanders.jpg|thumb|center|450px| Sanders at Tom Eltang's shop]] | |||
Bellow are shots from the shop of [[Rainer Barbi]]: | Bellow are shots from the shop of [[Rainer Barbi]]: | ||
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[[Image:barbi_beltsanders.jpg|thumb|center|450px|Rainer watching Heinz at the belt sander, courtesy of Heinz D (pipe makers forum]] | [[Image:barbi_beltsanders.jpg|thumb|center|450px|Rainer watching Heinz at the belt sander, courtesy of Heinz D (pipe makers forum]] | ||
This one should be simple enough to build by oneself, and the materials should be affordable. The longer the belt the more flexable it will be, and the easier to get into areas like the bowl/shank junktion. The idea is to lead the belt with the fingers, and thereby form it in any shape you need. It takes some time to learn the technique, but once learned this method is versatile and effective. | |||
My father in law will build me the needed frame with the possibility to bend the v-belt by changing the position of the motor. | |||
It is important that that one of the wheels the belt runs over should be out of metal or electroconductive material to prevent electrostatics. Here is the lower Pulley and drive motor: | |||
[[Image:barbi_custom_beltsander.jpg|thumb|center|450px|Rainer's Sander, courtesy of Heinz D (pipe makers forum]] | [[Image:barbi_custom_beltsander.jpg|thumb|center|450px|Rainer's Sander, courtesy of Heinz D (pipe makers forum]] | ||
The motor should run between 800 to 1000 rpm or the belt speed will need to be adjusted via stepped pulleys. Higher speeds than this will tend to burn the fingers while guiding the belt. Because ther is no need of much torque, a 0.5 to 1 HP motor should suffice. Here is the upper pulley assembly: | |||
[[Image:barbi_custom_beltsander2.jpg|thumb|center|450px|Rainer's Sander, courtesy of Heinz D (pipe makers forum]] | [[Image:barbi_custom_beltsander2.jpg|thumb|center|450px|Rainer's Sander, courtesy of Heinz D (pipe makers forum]] | ||
[[Image:barbi_custom_beltsander3.jpg|thumb|center|450px|Rainer's Sander, courtesy of Heinz D (pipe makers forum]] | [[Image:barbi_custom_beltsander3.jpg|thumb|center|450px|Rainer's Sander, courtesy of Heinz D (pipe makers forum]] | ||
The machine can be used with different grit belts. A handy assortment would include 120, 180, 220, and 320 grit. | |||
Here is the upper pulley assembly with a belt installed. | |||
[[Image:barbi_custom_beltsander4.jpg|thumb|center|450px|Rainer's Sander, courtesy of Heinz D (pipe makers forum]] | [[Image:barbi_custom_beltsander4.jpg|thumb|center|450px|Rainer's Sander, courtesy of Heinz D (pipe makers forum]] | ||
For this type of application, where you want to be able to guide & bend the belt by hand, you need "J" weight (very flexible) belts. | |||
One source of belts is: [http://www.trugrit.com/ http://www.trugrit.com/] | |||
You might need to have them custom cut & joined for extra long ones as seen in the above pics, or you can also find places that sell the cloth backed in rolls to make your own. | |||
Generic belts are most often false economy here. Recommended makes include Klingspor, Norton, Hermes, or 3M. Buy your belts from a reputable supplier that sells the quality belts from these manufacturers. Even these makers offer low end alternatives that are not suitable for this application. | |||