Author Topic: Wrong tool for the right job  (Read 461 times)

jpigg55

Wrong tool for the right job
« on: October 19, 2020, 07:53:46 PM »
Put the old HF metal bandsaw to the test today.
Cut a length off a 6" diameter piece of cast iron. What a chore that was.
SB 9A, Clausing 8520, Sanford MG 612

chips and more

Re: Wrong tool for the right job
« Reply #1 on: October 19, 2020, 07:58:59 PM »
Thatís great! Did it make the cut without the blade spinning off? Or have some other HF band saw quirk happen?

Carpenter84

Re: Wrong tool for the right job
« Reply #2 on: October 19, 2020, 08:09:51 PM »
Wow! Where did you get a chunk of cast like that?
If I bought that chunk up here it would be $500!
Shawn

First 9x42 column mill,
Enterprise 10x28 lathe,
Ko Lee 6x12 surface grinder,
Airco dip/stick 160 welder,
Fully stocked wood shop.

jpigg55

Re: Wrong tool for the right job
« Reply #3 on: October 19, 2020, 08:11:17 PM »
Nope, blade popped off at least a half dozen times, probably my fault though.
I'd cut as far as it would go, turn a few degrees, align blade with slot, and cut again. I was surprised when I'd rotated all the way around and the 2 cut slots were perfectly in line.
My problems started when I had to start raising up the material so it would shift closer to the motor end allowing deeper cuts. Realignment wasn't always as good so the blade started to wander a bit. When I saw that it was, I'd turn the material and realign. Took about 4 hours, but finally cut through.
SB 9A, Clausing 8520, Sanford MG 612

jpigg55

Re: Wrong tool for the right job
« Reply #4 on: October 19, 2020, 08:17:15 PM »
All I can tell you Shawn is a guardian angel had it delivered to my house.  :25:
SB 9A, Clausing 8520, Sanford MG 612

4GSR

Re: Wrong tool for the right job
« Reply #5 on: October 19, 2020, 09:40:45 PM »
I had to relocate the fixed jaw on my 4 x 6 band saw to cut a piece of 7" round bar.  Yeah, getting the two cuts lined up is a hit and miss for me!  Of course, my saw needs a major overhaul.  New guide bearings, motor.  Oh yeah, I smoked the motor back a couple months ago.  :'( 
Ken

PJB

Re: Wrong tool for the right job
« Reply #6 on: October 20, 2020, 10:15:58 AM »
wow.   impressive cut for that saw.
Definitely redefining max capacity.
Lucky it was CI not wrought material.   Did you use a lower tpi blade?   Too many teeth engaged definitely make for slow going.
1991 Bridgeport Series I 2J-VS  9"x48"
1979 Clausing Colchester Bantam Mk2 11"x30"
1972 Harig Super 612
2015 Tormach PCNC-1100 Mill

"I wants what you gots!"

jpigg55

Re: Wrong tool for the right job
« Reply #7 on: October 20, 2020, 04:21:29 PM »
If I remember correctly, it's either a 10 or 14 TPI blade. Still took a good 3 to 4 hours of cutting.
SB 9A, Clausing 8520, Sanford MG 612

woodchucker

Re: Wrong tool for the right job
« Reply #8 on: October 20, 2020, 05:11:07 PM »
If I remember correctly, it's either a 10 or 14 TPI blade. Still took a good 3 to 4 hours of cutting.


something along 3-6 tpi would work.
you need a place for the chips to go.
Jeff
Clausing 8520   SB Model 9a - power hacksaw, Milwaukee band saw in a table.  Delta Rockwell Surface Grinder
For pics: https://imgur.com/user/woodchucker/posts

Remember measure once cut twice, or was the measure twice cut once...

4GSR

Re: Wrong tool for the right job
« Reply #9 on: October 20, 2020, 09:46:01 PM »
Yeah, cutting cast iron on a 4 x 6 bandsaw creates more of a dust than chips.  Yuck!  I have to go look at the blades I've been running on mine for cutting the larger OD cast iron.  I know it is a vari-tooth type of blade like 10-14.  Like woodchuck said, a 3-6 tooth would be better.  I haven't found one that coarse, I think I saw a 7-10 tooth blade someone offered that would work on the 4 x 6 saws.. 
Ken