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Variable Pitch and Depth Bandsaws


By: John Eisenhut

A bit of background on myself, I’ve been in the Saw doctoring industry for a quite a few years now and in those years I’ve experimented a little outside the box with many things over those years.

Several in particular,

Hit and miss tipping / variable kerf, something I have a huge passion for. But also variable pitch band saws off older cam Technology grinders.

Now most of us know and I would think agree that reducing vibration in a saw is beneficial.

A Variable Pitch or Variable Pitch and Depth saws will run quieter than a standard pitch profile, there is no doubt about this it’s an actual fact and has been documented well over the years.

So a few points to consider

Firstly: from a health and safety point of view, quieter saws in the saw mill an immediate benefit in itself, and for most in the industry reason enough to make the change to a Variable Pitch saw.

It is common to receive feed back from the operators that they can’t hear the saw and in the next breath say I don’t like it, I can’t here it how can I cut fast and smooth if I can’t hear it.

What he is actually saying is the saw has changed its cutting pitch

This is nothing that a re-adjustment period and a bit of reassurance and coaching over a few days won’t fix and it is definitely not something that should dictate not changing to the Variable Pitch concept.

This is a free advantage,no outlay no more expensive than a standard saw

Old technology grinders or standard cam grinders can grind a three pitch scenario with not too much effort, so the gain is there for us all

Another benefit from a VP saw is the ability of the saw to decrease or eliminate completely any wash board that may be occurring…. This…. Again is achieved without any other investment or modification being required. It’s a free fix

Some of the myths around using Variable Pitch saws are that they can not be serviced on a cam driven grinder, this is absolutely not the case,

Yes care needs to be taken to not over grind the face of the tooth “ and” the tooth shape may not be as “pretty” as a CNC machine,however the additional benefits are there to grab. Your choice

The assumption that a VP saw is harder to deal with is also misguided information, setting a Variable Pitch saw going on a cam grinder or a CNC grinder is a simple task,

Continued Benefits

Now the money maker advantages

Increased feed rates

A decrease in within board deviation or a combination of both… and again these benefits are being harnessed without any other investment or upgrade, its effectively a free performance increase for your sawmill.

You have to buy saws for your saw mill; there is no difference in price between buying a standard profile saw or a Variable Pitch profile saw,

We at Thode can cut your saw to any profile you require

Water cut by Thode Knife and Saw / cold cut flat and true, with no punch deformation

Even if you only have a cam driven grinders we can cut a profile to suite what they produce,

Our CNC water cutter allows us to cold cut your profile to very close tolerances,

The cut is clean, accurate and without heat absolutely no deformation in the p[late

This can save you hours of grinding time, and have your new saw up and running in no time at all

Oil CBN versus Water Miscible

Prepared by: John EisenhutDate: 29/05/2020My thoughts on oil / CBN versus old school vitrified wheels and soluble oil in waterJust for your information and to enlighten everyone on consumables and maintenance on these Iseli saw shop servicing equipment / grinding machines.To date on our site we have had no issues other than a broken belt on a side grinder [...]

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MVM Virtual Fair

The Virtual fair new in 2020The tour offers you the opportunity to see our machines exactly as you might have seen them on our exhibition stand at the big trade fairs, that have now been cancelled by the organizers due to Covid-19 emergency.https://www.mvmsrl.it/en/virtual-fair-mvm.asp

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Iseli stand Ligna 2019

2019 was a huge year both for Thode and Iseli in regard to machinery sales. Kevin Parker from Thode worked on the Iseli stand representing New Zealand, Australia and Canada. The flow on machinery sales achieved since Ligna has been extremely encouraging and is a testament to the brand and service.

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Thode at the Kanefusa Seminar during Ligna 2019

Kevin Parker and Darren Clissold (2nd and 4th from right) representing Thode at the Kanefusa Seminar during Ligna 2019

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New Iseli install in Australia

Troy Kidman and Matt Laity of AKD Colac next to one of their new Iseli BNP200’s. Thode recently supplied AKD with 2 of Iseli’s latest 3 axis BNP200 profile complete with automatic tooth tracing along with a new Iseli SAA tipper, these machines compliment the Iseli 4 axis side grinder (EM300) and the Iseli RZ1 auto bench purchased 2 years [...]

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New Iseli RZ1 Install Canada

Our latest happy customer Produits Forestiers D&G Canada, have taken a leap for the future and invested in the latest Iseli RZ1, Levelling, tensioning and straightening of band saw blades has traditionally been a highly labour-intensive job which could only be performed in individual steps by highly skilled and qualified operating personnel,The ISELI benching centre [...]

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Red Stag Saw Shop

Red stag have the latest Iseli technology in there saw shop With two sets of quad saws requiring saw changes every six hours on average, a brand new saw shop has been built, much thought went into the planning and equipping this important element of the operation.The saw shop is bright and airy and features [...]

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Thode Knife & Saw Canada

Phil Higgins Thode Canada’s Manager presents Roy Fillion with a set of Vernier Callipers which Roy won in a draw. Olly Mooney in the background worked on the Thode stand along with John Eisenhut (Thode's Bandsaw Plant Manager) and Philipp Iseli at the British Columbia Saw Fliers Association Convention in Kamloops in April 2019.

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Another site that has taken the leap into the latest technology that Iseli has to offer, Trevor Payne (Head Sawdoctor) Wespine next to his new Iseli BNP200 supplied by Thode. Trevor says the site’s band saw cracks are now a thing in the past after the installation of his new BNP200.Please contact us if you would like a quote [...]

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