Author Topic: Oscillating multi tools - do blades really wear out so fast?  (Read 2063 times)

0 Members and 1 Guest are viewing this topic.

Offline Deke

  • Posts: 194
I bought a Dewalt oscillating multitool this past weekend, and used it to cut out about 6" of baseboard trim (vertically, from floor to top of the trim). I took my time, didn't push it/force it, but was kind of shocked the stock blade was pretty much toast after this one cut. Is that normal? Are there specific brands of blades that are of good quality (and worth the corresponding price). I do like the tool itself - no complaints there. I'm just a homeowner, so cost of blades won't kill me, but I figure some of you pros out there have found a way to keep the blades running and costs down.

Festool USA does not pre-approve the contents of this website nor endorse the application or use of any Festool product in any way other than in the manner described in the Festool Instruction Manual. To reduce the risk of serious injury and/or damage to your Festool product, always read, understand and follow all warnings and instructions in your Festool product's Instruction Manual. Although Festool strives for accuracy in the website material, the website may contain inaccuracies. Festool makes no representations about the accuracy, reliability, completeness or timeliness of the material on this website or about the results to be obtained from using the website. Festool and its affiliates cannot be responsible for improper postings or your reliance on the website's material. Your use of any material contained on this website is entirely at your own risk. The content contained on this site is provided for informational purposes only and does not constitute professional advice.


Offline ear3

  • Posts: 3348
Re: Oscillating multi tools - do blades really wear out so fast?
« Reply #1 on: October 10, 2017, 04:48 PM »
That sounds a bit too quick even for an off-brand blade to wear out.  Is it possible you were hitting the drywall/plaster behind the trim, which will normally dull a wood or multipurpose blade pretty quickly?

Also, blade wear is accelerated when you start burning/smoking the material, which will happen if you're not creating enough movement on the cut for the sawdust to escape.
Kapex KS 120 w/UG Cart and Extensions • CXS Set • T18+3 w/Centrotec Installer's Set • PDC 18/4 • TS 75 • TSC 55 • HKC 55 w/250, 420 and 670 FSK rails • Carvex 420 w/Accessory Kit • Domino 500 Set • Domino 700 XL • OF 2200 w/Base Accessory Kit • OF 1400 • OF 1010 • MFK 700 EQ Set • LR 32 • MFS 400 w/2000, 1000, and 700 extensions • Rotex 90 • Rotex 150 • LS 130 • ETS-EC 150/5 • ETS 150/3 • Pro 5 LTD • RTS 400 • RAS 115.04 • DX 93 • RS 2 • HL 850 • Vecturo OS 400 • CT 26 w/Long-Life Bag • CT Sys w/Long-Life Bag • MFT/3

Online tjbnwi

  • Posts: 5261
  • Cedar Tucky Indiana
Re: Oscillating multi tools - do blades really wear out so fast?
« Reply #2 on: October 10, 2017, 04:54 PM »
Slow the speed of the tool down.

Tom

Re: Oscillating multi tools - do blades really wear out so fast?
« Reply #3 on: October 10, 2017, 05:10 PM »
Slow speed down a bit and don't force the machine, let the blade work. Have a little glass of water nearby to cool the blade if you have a lot of cutting to do in one go. On the Fein Wood/Metal blades they used to have stickers saying Max 4 Speed setting or something like that. I have my Fein mostly at speed 4 and the blades last quite long. When they are dulling out I keep them for cut outs in plaster where they hold up for a very long time.

I did use another brand - Imperial??! - and they were really good on cutting down nails and such and lasted a very long time for "mixed materials" work.
Festool:  CS 50EB precisio set, Domino DF500, DF XL 700, OFK500 edge router, OF1010 router EHL65 planer, CTL Mini/Midi Vac, CTL 26 vac MFT800+1080 tables
DSC-AG Grinder,  RAS 115
Rotex 150, ETS EC 150/5 RTS400
Drills: T18, BHC18, CXS.
SysLite KAL II, SYS Rock.
Sys- and Sortainers galore.

Line up has been reduced with the introduction of Mafell/Metabo tools. Red Green and Blue do mix well in the shop.

Offline Deke

  • Posts: 194
Re: Oscillating multi tools - do blades really wear out so fast?
« Reply #4 on: October 10, 2017, 05:32 PM »
Ah, okay I was almost certainly cutting too fast and there was plaster-lather behind it. I'll be smarter. Gee, there was this thing called a manual in the box...  [smile]

Online tjbnwi

  • Posts: 5261
  • Cedar Tucky Indiana
Re: Oscillating multi tools - do blades really wear out so fast?
« Reply #5 on: October 10, 2017, 05:34 PM »
Helps to rock the tool a little also.

Tom

Offline w802h

  • Posts: 205
Re: Oscillating multi tools - do blades really wear out so fast?
« Reply #6 on: October 10, 2017, 05:48 PM »
When I cut plaster with a multitool, I use an abrasive blade designed for plaster or concrete.  Plaster wears blades hard!  I use a spent wood blade for sheetrock.  The substrate matters a lot.

Offline kevinculle

  • Posts: 149
Re: Oscillating multi tools - do blades really wear out so fast?
« Reply #7 on: October 10, 2017, 08:00 PM »
Bosch makes a multitool blade for woodcutting that is a carbide toothed section (not grit like a tile blade) that is brazed to a steel blade.  It costs a bit more but lasts much longer than the typical blades. The P/N is OSC134.

Offline antss

  • Posts: 1373
Re: Oscillating multi tools - do blades really wear out so fast?
« Reply #8 on: October 10, 2017, 08:38 PM »
How many teeth per inch does that stock blade have ?

I've found that small teeth and numerous TPI blades don't work all that well in dense woods , especially MDF baseboard.  Old oak flooring will wear out just about any blade you throw at it too.  I have better luck with Japanese saw type blades.

I concur that slowing the speed down helps in many cases.  I've also had good luck with Bosch's blades in terns of wear.

Offline DB10

  • Posts: 899
Re: Oscillating multi tools - do blades really wear out so fast?
« Reply #9 on: October 10, 2017, 10:32 PM »
Try using Bi-Metal Blades, they cost a bit more but if you hit a nail or screw it doesn't wreck the blade and they keep there edge a lot longer.

Offline Laminator

  • Posts: 299
Re: Oscillating multi tools - do blades really wear out so fast?
« Reply #10 on: October 11, 2017, 11:01 PM »
The bosch carbide blades are well worth the money. They will far outlast hss (bimetal) blades in wood and metal. They will even handle hardened steel screws if the need arises.

Offline Naildrivingman

  • Posts: 338
Re: Oscillating multi tools - do blades really wear out so fast?
« Reply #11 on: October 12, 2017, 06:15 AM »
Try using Bi-Metal Blades, they cost a bit more but if you hit a nail or screw it doesn't wreck the blade and they keep there edge a lot longer.
I second the Bosch for general cutting of unknown internal composition.  For fast and clean cutting of wood I have used Imperial hardwood blades.  They are similar to Japanese teeth, but not as fragile.
Dance with who brung ya...

Offline Deke

  • Posts: 194
Re: Oscillating multi tools - do blades really wear out so fast?
« Reply #12 on: October 27, 2017, 09:52 AM »
Sorry for the late reply, but thanks to all. Bosch bimetal it is and I will take care with the plaster!

Offline Rosco

  • Posts: 8
Re: Oscillating multi tools - do blades really wear out so fast?
« Reply #13 on: October 27, 2017, 10:58 AM »
In my experience they are all pretty pathetic.

I've tried the expensive blades and the cheap. Hardly any difference. They are a rip off.

At the end of the day this tool is fantastic at getting you out of tight spots. As a result they are used in all sorts of applications. The blades should therefore be up to the task also,  with this reflected in the price.

£13 for a Bosch single wood/metal blade that can sometimes,  be toast after a single use?...jog on!



Offline JimD

  • Posts: 325
Re: Oscillating multi tools - do blades really wear out so fast?
« Reply #14 on: October 27, 2017, 09:56 PM »
I have a set of bosch blades, a Fein bi-metallic that came with my best oscillating tool, and multiple cheap ones.  The Bosch carbide is much different than the bi-metallic Bosch and Fein.  It goes through nails fine and is holding up well.  The bi-metallic is probably better if you hit a nail than a wood blade but they do not hold up anything like the carbide.  But the carbide is shorter and I hesitate to use it as an all around blade.  I might have mis-used the Bosch bi-metallic but it seemed to dull and start to burn the wood quickly.  I think the Fein is holding up better. 

None of them are worth what they cost - except when you need the tool, you need a blade too.  Seems like somebody could make a bunch of money offering similar blades at a lower price. 

Offline harry_

  • Posts: 1160
Re: Oscillating multi tools - do blades really wear out so fast?
« Reply #15 on: October 27, 2017, 10:36 PM »
In my experience they are all pretty pathetic.

I've tried the expensive blades and the cheap. Hardly any difference. They are a rip off.

At the end of the day this tool is fantastic at getting you out of tight spots. As a result they are used in all sorts of applications. The blades should therefore be up to the task also,  with this reflected in the price.

£13 for a Bosch single wood/metal blade that can sometimes,  be toast after a single use?...jog on!

I use both chinese and Festool blades in my Vecturo. Chinese for "demo" work or where nails are suspect. Festool blades for when I need to actually care about the quality of cut. I also roll with the presumption that if I have to use that tool it's going to cost me $10 (averaged).
Disclaimer: This post is for educational and entertainment purposes only. Any resemblance to real persons, living or dead is purely coincidental. Void where prohibited. Some assembly required. Batteries not included. Contents may settle during shipment. Use only as directed. No other warranty expressed or implied. This is not an offer to sell securities. May be too intense for some viewers. No user-serviceable parts inside. Subject to change without notice. One size fits all (very poorly).

Offline Cheese

  • Posts: 3594
Re: Oscillating multi tools - do blades really wear out so fast?
« Reply #16 on: October 28, 2017, 12:43 AM »
I'll use Japanese style blades for installing hardwood floors. The have a small kerf and cut very cleanly. Perfect for weaving in new floor boards.

I also use Bosch Carbide toothed blades for plaster and they are the cat's meow...way better than anything else out there.

Offline epicxt

  • Posts: 411
Re: Oscillating multi tools - do blades really wear out so fast?
« Reply #17 on: October 28, 2017, 04:39 PM »
Try the Falx blades from Canada. The ones I've tried have been superb, although plaster will do a number on most blades.
n = number of Festools I've got.  (n + 1) = Festools I want