The question keeps coming up about 1 x 42 sanders vs. 1 x 30 sanders for
ferrule turning, so I did some research and thought I'd share the results.
This is all about finishing ferrules. The speed of the belt (Surface
Feet per Minute) is a factor, as is the size of the machine and the
availability of the DuraBrite felt belts. The 1 x 42 sanders have much
more room to manuver the head and the DuraBrite belts are only available
in 1 x 42. I mention the DuraBrites (available at GS) because I have
heard nothing but high praise for them.
I have the Surface Feet per Minute for each machine listed. In come
cases it came from their specs, in others it was computed. (drive pulley
diameter and motor speed are needed). I also listed the current "street
prices" in US dollars.
1 x 42 Sanders
1,693 SFM - GW GW1105 (3-3/4" drive pulley, 1,725 rpm), $190
1,744 SFM - GS 240792 (3-7/8", 1,720 rpm), $260
2,708 SFM - Lee Valley 68Z75.01 (6", 1,725 rpm), $60 - you provide the motor
3,000 SFM - Delta Shopmaster $99, Grizzly $140, Wilke $?
4,710 SFM - GW GW1021 (6", 3,000 rpm), $320 (GW1022 also has 6" pulley,
you provide grinder, $150)
1 x 30 Sanders
2,635 SFM - eBay (do a search and you'll find a bunch of them) $~35
3,150 SFM - Wholesale Tool 3032-0200 $60
3,348 SFM - Harbor Freight 2485-0VGA (3-3/4", 3,412) $40
/Ed
