Thursday, March 21, 2013

Proper blade tracking

There are many variables that can lead to crooked cuts when using band saw blades.  These common causes include worn or improper blade guides, too many teeth in the cut, feed pressure that is too high, low band tension, a fixed vise that is not square or a saw table that is not level with the blade, and last but not least- improper blade tracking.  Attached is a picture of how a blade SHOULD look like as it sits on the wheels.  Notice how the teeth are not riding on the wheel?  If the teeth of a band saw blade ride too far back and come in contact with the drive wheel or idler wheel, the set is damaged.  This will lead to a blade cutting crooked as well as premature wear on the wheels themselves.  Setting your blade tracking is a fairly easy procedure on most band saws, and will need to be adjusted periodically.  If you have questions, need us to help with your tracking, or need assistance with anything related to band sawing- call me!
 Keep cutting!  Joe Band Saw

Thursday, February 16, 2012

Hyd-Mech bandsaws, no lead times!

I just wanted to let you know that when you were talking, I was listening. Too many times when quoting a Hyd-Mech band saw things were going smoothly until the dreaded conversation regarding lead time. Was that a pin drop I heard after telling you the saw would be ready in 17-24 weeks? We live in a world that when we want something, we want it now (guilty as charged!). In an effort to comply with the high demand of Hyd-Mech saws, Detroit Band Saw has purchased three brand new machines that are waiting and ready to be put on your shop floor.

S-20: The S-20 is Manual saw with a swing head design is ideal for use in tight working spaces. This saw is perfect for light or medium duty applications

S-20P: The S-20P is a semi-automatic miter head saw that is also perfect for light or medium duty applications. This machine has an LCD display to show: the machine mode, pieces cut, blade tension, blade speed, amperage draw of blade motor, cut duration, overall machine run time and head position.

H-14A: The H-14A is a fully automatic horizontal band saw. We purchased this machine with the following options: Hydraulic Overhead Bundling, Laser Light, and Variable Vise Pressure. The H-14A provides a 90 degree cutting angle. This machine is perfect for medium to heavy-duty applications.

If you have any questions, concerns, or would like a quote, give me a call--I'd be happy to help.

Keep Cutting,

Joe Bandsaw

Thursday, September 29, 2011

Cutting Fluid

Most industrial band saws cutting metal should be using some sort of a cutting fluid/lubricoolant. When used properly, coolant should: wash chips out of the blade's gullets, cool the "tooth" tips to reduce heat damage, and lubricate the cut to reduce heat caused by cutting friction. Using the proper fluid will prolong the life of your band saw blade. In order to ensure proper dilution, a mixing ratio is printed on each label. Material Safety Data Sheets (MSDS) are available for every fluid we offer.

Cutting fluid should not be used when cutting materials that produce a powder, such as gray iron.

We carry a full line of Pure Synthetic and Semi Synthetic Coolants. We also carry Water Soluble Oils and Environmental Clean-Up products. You can check out our full line of cutting fluid at: http://www.detroitbandsaw.com/store.asp?pid=22312&catid=19886

If you are unsure which fluid you should be using, give us a call--we would be happy to help!

Keep cutting,
Joe Bandsaw

Tuesday, September 20, 2011

Stripped Teeth--Problems and Solutions

Did you know that 80% of blade failure is not due to the saw blade itself? If you notice there is a section of your band saw blade with an area of very dull or missing teeth take a look at the possible causes and resolutions listed below:



Too many teeth are in the cut causing the gullets to overfill

Use a coarser tooth pitch

Too few teeth in the cut

Use a finer tooth pitch

Over penetration of teeth, causing gullets to overfill

Increase blade speed or decrease feed rate

Chips are being carried back into the cut

Adjust or replace the chip brush

Parts aren’t held securely

Use a bundle clamp or tack weld stock ends

Erratic hydraulic system

1. Check for air in the system 2. Check for low oil

Belts slip under a load

1. Check belt tension. 2. Replace belts if necessary.



If you are experiencing other problems with your blade such as: gullet cracks, weld breakage, or chip welding take a look at the "Problems and Solutions" section of our Web Site: www.detroitbandaw.com

Monday, September 19, 2011

Blade Break-In; Why it's important!

Have you ever compared your band saw blade to a freshly sharpened pencil? Let me tell you why you should. If you try to apply too much pressure to a freshly sharpened pencil tip it's probably going to break; a band saw tooth reacts the same way. Breaking in or "honing" your band saw teeth will result in longer blade life. Band speed is not what breaks down the tooth tip during the honing process, feed pressure is. To properly break in your band saw blade, reduce your feed rate by 50% for 25 sq. inches then gradually increase your feed to the normal rate. For more tips and troubleshooting help take a look at our Resource Information Library: www.detroitbandsaw.com/store.asp?pid=31009&catid=19886

Lets cut,
Joe Bandsaw

Tuesday, July 26, 2011

Hyd-mech S20p

I am very excited to share that our first saw purchased through an auction was a complete success! In very little time were were able to: purchase a used Hyd-Mech S-20p, fine tune it to run like new, and ship it out the door. Our customer needed a saw ASAP, we provided it. We know times are still tough and new band saws don't always fit into the company budget. Our niche at Detroit Band Saw is to create solutions to help our customers become as efficient as possible. We have the skill, the knowledge, and the options to make that happen. If we can be of any assistance give us a call 877-421-3636. Not ready to make the call? Check us out: www.detroitbandsaw.com

Lets Cut!

-Joe Bandsaw

Friday, December 10, 2010

Proper tooth pattern for faster cutting

One of my customers recently contacted me for assistance in improving their steel cutting production rates. They had run up against a wall in trying to get faster cut times for some large bundles of angle, i-beam, and c-channel. Their saw was running smoothly, but the cut times were way too slow for their manufacturing demands.
I made an on-site visit to get first hand look at what was going on. They were cutting a 12" x 12" bundle of c-channel, approximatley 40 pieces in the bundle, and it was taking about 50 minutes to make the cut. That was a metal removal rate of 1.38 sq. inches per minute! No wonder they were panicked! They should be cutting around 7-10 square inches per minute!
Ok, what was the problem then....well, it all came down to proper tooth selection. They had never cut those large bundles of steel before, they were used to cutting one and two pieces at a time. When they went to a larger cross section of material, they never changed the tooth pattern. They basically had about 60 teeth in the workpiece at one time- 3x too many. I brought them a much more aggressive tooth pattern, broke the blade in for one cut, then i proceeded to cut that same bundle in 9 minutes! 50 minutes to 9 minutes- ya think they love me or what!? If you want me to improve your cutting rates, improve your production output, or help with your band saw blade life, look me up at www.detroitbandsaw.com
Stay warm,
Joe Bandsaw