Review - Bosch GST 140 BCE Professional Jigsaw


Modelled on Albert Kaufmann's wife's sewing machine, the jigsaw is one of the quintessential power tools, whether we choose cordless or stick with the more traditional corded variety.

Going corded for our jigsaw has some obvious benefits:

  • non-stop power
  • more power

In this instance we're going to look at the latest professional corded jigsaw from Bosch, the GST140 BCE Professional, with a 720W motor, providing you with 240v of power.

In plain English, this jigsaw is a beast.

Thankfully, though, Bosch has also packed out the GST140BCE with as many features as it has power.


Quite simply, a powerful jigsaw is worthless if it's uncontrollable. It really is that simple. An extremely powerful jigsaw that has the capacity to cut through thick, hard materials quickly can also be hard to control. Bosch realises this and has put checks and balances in place on the GST140 BCE to provide you with a corded jigsaw that handle the jobs you throw at it, while remain completely within your control.

This control is provided in the following ways:

  • 2 roller guide systemswhich prevent blade drift or bend. This means that the blade will firmly hold to the line you're cutting and not start to drift across the material you're cutting
  • double lock on the blade, coupled with the Bosch tool-free, secure-fitting saw blade changing system (SDS) which will prevent the saw blade from wobbling to ensure maximum surface quality. In other words, cleaner cuts without losing power
  • variable speed triggerwhich which allows you to have complete control over the speed of the blade
  • a speed dial allowing you to set the top speed of the blade
  • Constant Electronics is like the cruise control system in your car and controls the speed produced by the 720W motor


Comfort as well as control

Using a high-powered tool like the GST140BCE Professional jigsaw could be an uncomfortable experience, particularly in terms of vibration and dust. After all, we're dealing with a high powered motor, moving a blade in an orbital action at extremely high speeds through hard materials. This means the jigsaw will vibrate a lot and kick up a lot of dust


However, thanks to Bosch's anti-vibration technology, vibration levels are within the guidelines, with the GST140 BCE Professional producing 7.0 m/sē. It's also been rated A for noise levels. This means in terms of vibration and noise, you're within the safety levels.

Dust is also a consideration, for a couple of reasons.

Obviously, clearing the dust away from your cutting line is important, no just for accuracy of cut, but for safety. The GST 140BCE has dust blower at the front to clear the dust while you cut.

But secondly, and probably more importantly health-wise, the GST140 BCE Professional has a dust port on the rear to which you can attach a dust extractor. The unique selling point of this system is the flexibility of the extraction pipe; it moves idependent of the jigsaw meaning you can keep it clear of your cut and position it as you see fit while you cut.


This is especially useful when you're cutting curves or corners.


Another great feature is the SDS tool-free system for fitting and removing the blades. No tools required - obviously - and this has real benefits if the blade jams or after cutting hard materials. The blade will be hot, but you don't need to touch it, simply flick the level and the blade will eject automatically.

Adjustable all the way

Pendulum action on a jigsaw is probably no longer a luxury. It's a must-have feature. As explained on our cordless jigsaw buying guide, the term "pendulum" describes the orbital movement of the jigsaw blade. Rather than simply moving up and down, the blade also moves backwards and forwards.


The action of moving backs and forwards, as well as up and down, means that the blade will always be cutting fresh material, which in turns means a faster cut, even through very hard materials.


The GST140 BCE has 4 stages of pendulum action and a cutting stroke of 26mm.


Another adjustable feature of the GST 140 BCE Professional is the baseplate. Rather than having to use tools tweak the angle of the baseplate, simply flip the lever on the side and move the spring loaded baseplate to the angle you want to cut, up to 45 degrees either side, then lock it off again.


At the business end of the jigsaw Bosch has fitted twin LED lights which are controlled independent of the trigger, so you get to choose when you use them or not.

Of couse, getting the absolute best from your jigsaw is heavily influenced by the blades you use. So be sure to refer to our jigsaw blade buying guide to make sure you choose the correct blade for the applicaiton you're undertaking.

All in all, then, we think the Bosch GST 140 BCE Professional jigsaw is a belter. No, it's not lithium-ion powered. It's a good, "old fashioned" corded jigsaw that packs loads of power, but balances that power with excellent control within the motor, at the trigger and at the blade. Dust and vibration are also taken care of.

We'd love to know what you think of the jigsaw, so please let us know in the comments or on Facebook.


Check out our hi-res images of the Bosch GST 140 BCE Professional jigsaw on Google Plus.

Comments

Jeremiah george on Mon, 03 Nov 2014 18:19:16 -0500 (Likes: 0 / Dislikes: 0

I have just got this Bosch BCE140 . but 45degree tilt mechanism is very hard to pull and turn
Is it how it is design , or does it need any adjustment?

Jeremiah


Toolstop on Mon, 16 Jan 2012 16:06:11 -0500 (Likes: 0 / Dislikes: 0

Many thanks for the feedback Chris. I don't think you'll be disappointed with the Bosch precision jigsaw


Chris Owens on Mon, 16 Jan 2012 15:16:00 -0500 (Likes: 2 / Dislikes: 0

Thanks very much for the help: much appreciated!

It's an old Bosch green jigsaw, and, while it doesn't owe me anything, I'm not keen on spending u00a3200 on a replacement that just does the same. The jigsaw now gets a lot more use (partly for work) and so I was thinking of a blue Bosch.

On further investigation, it does seem to do with the soleplate moving as much as the blade wandering, as far as I can see: the soleplate locks into notches on the base of the jigsaw and is then tightened with a bolt; because of play in the fit with the notches, it moves. In addition, the action of turning the jigsaw (or sometimes just holding it in line as I cut) seems to deflect the blade out of line, although this is possibly just the soleplate moving out of square.

The problem happens with or without pendulum, using mostly DeWalt blades marked "Clean wood", 105-1, cutting 18mm MDF. The holes are rectangular, from about 80mm x 80mm to 100mm x 500mm. The jigsaw isn't being guided, just kept on line by eye. I couldn't use a holesaw, although where it's critical it's straight, I could rout the cut. The cut does seem to be miles out - enough that when you look at it you think "that's on the p***".

Basically, I think I just need a reliable trade-grade jigsaw where the soleplate is held firmly, and so is the blade.

Can I say how much I like the blog, and in particular ToolStop TV: it's now the first place I look for power tool info, and so will be the first place I go when I buy tools.


Toolstop on Wed, 11 Jan 2012 16:54:53 -0500 (Likes: 0 / Dislikes: 0

Hi Chris, we have a few questions for you.

What Jigsaw are you using at the moment which is giving you these problems? We can't tell if it's a Bosch (this model or otherwise) or if you've just had a bad experience with precision cutting and blade wander in the past.

Does the base plate move in relation to the tool while cutting?

Tip: The base plate should stay put when the SDS lever for base plate angle adjustment is pushed fully home into the side of the tool.
If you can move the base plate out of alignment even though the lever is fully in, then you might need to tension the hex bolt in the middle of the base plate (while the lever is out) to allow the SDS lever to tighten the bolt a little more firmly. Donu2019t turn the bolt too much or the lever will not return to the fully closed position.

Or is the blade deflecting (wandering) while cutting?

Which blade is being used for this job?

Is any pendulum being used?

How is the jigsaw being guided when cutting the hole?

What diameter is the hole being cut?

if 150mm or less, has a hole saw been considered?

Has a router been considered if such high accuracy is required for this hole?

Actually a 1mm variance in radius for a jigsaw (and this really is dependent on the answers to most of the questions above) is really not that bad?

PS: Yes, the double roller (nothing to do with blade clamping) system does work.


Chris Owens on Thu, 05 Jan 2012 12:59:52 -0500 (Likes: 0 / Dislikes: 0

I'm having problems getting my jigsaw to cut vertically (the "roll" axis) - the baseplate no longer wants to stay at 90 degrees to the blade, (or vice versa?), despite me using a square to get the angle right when setting it up. Does the baseplate on the GST 140 (B)CE lock well enough to prevent this? Does the new blade clamp system actually help? I'm getting rapidly sick of holes in 18mm MDF being 2mm larger at the bottom than the top!


Lansdownehouse on Wed, 30 Nov 2011 08:01:55 -0500 (Likes: 5 / Dislikes: 0

I personally believe Bosch makes the absolute state of the art in jigsaws.
Others, such as Mafell and Festool, offer ostensibly fancier designs at premium prices, but are way off the mark by offering accessory shoes in a separate systainer for bevel cuts.
What a stupid idea! u00a0Guess what gets left behind at home just when you need it most on site?
Bosch, by contrast, offer everything you need in a jigsaw, without any of the drawbacks of the so-called fancier brands.
I'm especially impressed with the swivelling dust spout. u00a0This would have to be the first jigsaw in history where dust extraction can actually be used without compromising the quality of cut!
The LED lights and easily adjustable blade guides make for a far superior design to its competitors.


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