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band saw blade???

toad67toad67 Member Posts: 13,008 ✭✭✭✭
in General Discussion
I need to make some new ceiling fan blades, and have found some nice 1/8" plywood to use, that match the existing thickness. I need to make 4 blades, but plan on stacking 6 pieces together and cutting them together, so they are matched, and also to avoid breakout from the cut. I currently have a 4 tpi blade, and was wondering if a higher tpi count blade would wake the cut better? The blades are small, only 16" long, and have very large radius's. 
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Comments

  • pulsarncpulsarnc Member Posts: 6,559 ✭✭✭✭

    Generally the more teeth per inch the finer the finished cut will be . I would probably use a 12 to 14 tooth blade , even an 18 if I had one in stock

    cry Havoc and let slip  the dogs of war..... 
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  • TRAP55TRAP55 Member Posts: 8,292 ✭✭✭
    toad, want me to send you some ceiling fan blades? Got a box of em from some dead fans I changed out that are soon to be in the trash.
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  • BobJudyBobJudy Member Posts: 6,671 ✭✭✭✭
    I think you are on the right track with using at least a 12 tpi blade. The two extra pieces should minimize any tearout. My only question would be the 1/8 plywood. I just checked and all my fans (20 year old Hunters) have 1/4 inch blades. I hope the 1/8 is thick enough to resist flexing while the fan is running. Bob
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  • mohawk600mohawk600 Member Posts: 5,529 ✭✭✭✭
    you need 32 tpi
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  • NeoBlackdogNeoBlackdog Member Posts: 17,279 ✭✭✭✭
    mohawk600 said:
    you need 32 tpi
    What he needs to do is stop hoarding all his gun and toilet paper money and just buy a new fan!!! :D:D;)
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  • toad67toad67 Member Posts: 13,008 ✭✭✭✭
    Thanks for all of the advice, but remember, each blade will be 1/8" thick, with the four I need, and the other two for protection, the total will be 3/4". According to Olsen, who is a blade manufacturer, they recommend 3-6 teeth in the wood at all times, too few, or too many teeth can cause the same problems of tooth strip-age, or clogging. I was thinking that there might be a difference between re sawing larger single material, and using a courser blade, than combining pieces to have the same thickness.
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  • BrookwoodBrookwood Member, Moderator Posts: 13,768 ******
    Good luck!  Getting all the blades to balance properly will be your main concern IMHO.  
    I have great respect for folks who take on projects like this.  
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  • charliemeyer007charliemeyer007 Member Posts: 6,572 ✭✭✭
    Tape the cutting line on both sides of each piece.  Blue painter's tape.  I would also suggest you seal them first with some sort of finish to glue the grain, then treat the raw edge when you are done.  
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