Author Topic: Angle grinder AGC for stainless steel  (Read 415 times)

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Offline PreferrablyWood

  • Posts: 926
Angle grinder AGC for stainless steel
« on: September 13, 2020, 03:17 PM »
I will be doing some work with stainless steel. I would like to hear if anyone has used the Festool AGC angle grinder for this application.

From what I understand it's best with a lower speed threshold than the AGC offers but maybe it will do fine if you work slowly or take multiple passes.

The the alternative I'm looking at is a metabo WEV 17-125 QUICK INOX that is specifically designed for working with stainless steel.

thanks for any help in advance.

Vecturo OSC, BHC SDS, RO 150, 850 HL E Planer rustic head standard head angle fence, MFS 400x2, MFS extensions MFS VB 700 x 1 MFS VB 1000 x 2 . CMS GE, sliding fence, VB and 2x VL extension tables, OF 2200, Accessory Set ZS OF 2200 M,36mm 5m antistatik hose, CMS OF+ CMS TS 75 insert modules. SYS-MFT Fixing-Set,  3.5m sleeved hose, Syslite duo, Sys 4 sort 3 x3, Sys Roll, Sys 1 Box x2 , classic Sys 3-Sort 4, classic Sys 3 Sort 6 x2, Sys Cart x3 Systainer 4 x2  as toolbox with selfmade inserts Systainer 5 as toolbox with insert.
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Offline Peter_C

  • Posts: 910
Re: Angle grinder AGC for stainless steel
« Reply #1 on: September 13, 2020, 03:49 PM »
I just use a regular 4 1/2" grinder for stainless work *shrugs* Cuts, grinds, and works just fine with a flap disk. The Festool grinder sure would be nice though!

Offline Cheese

  • Posts: 7674
Re: Angle grinder AGC for stainless steel
« Reply #2 on: September 13, 2020, 04:40 PM »
Both Fein & Metabo make several 5" grinders specifically for stainless work. All the stainless models are variable speed and the max speed is also lower than a traditional 5" grinder to prevent burning the stainless. A conventional 5" grinder runs 11,000-13,000 rpm while the stainless specific grinders stay within the 7,500-8,000 range.

The AGC is variable speed so you can throttle it down a bit. According to Festool, setting #4 is 6,900 and setting #5 is 7,700 so that puts you in the correct speed range.

Both the Fein & Metabo can go down to 2,000-2,500 rpm while the AGC will only go down to 4,500 rpm. However, I don't think that that will be a problem because I doubt you'd need to go that slow. 

« Last Edit: September 13, 2020, 04:43 PM by Cheese »

Offline RJNeal

  • Posts: 543
Re: Angle grinder AGC for stainless steel
« Reply #3 on: September 13, 2020, 05:30 PM »
@PreferrablyWood, just a reminder , when working with stainless, remember not to slow the grinding wheel down on ferrous metal like a bench. It will contaminate the wheel and transfer to your work there after, allowing rust to set in later.
Have you walked your saw today?

Offline rvieceli

  • Posts: 1253
Re: Angle grinder AGC for stainless steel
« Reply #4 on: September 13, 2020, 10:13 PM »
Metabo makes a great grinder. I do not think you would be disappointed in their offering.

I have this one and it is smoother than all my other grinders.

METABO W 9-115 QUICK

https://bismetabo.com/sample-metabo-category/cutting-sanding-milling/angle-grinder/600371420-metabo-w-9-115-quick-4-5in-angle-grinder-10-500-rpm-8-5-amp-w-lock-on.html

As my others die I'm planning on replacing them with Metabo. And yes I have multiple grinders as I hate switching disks in the middle of a process.  [wink]

Ron
« Last Edit: September 13, 2020, 10:15 PM by rvieceli »

Offline Peter_C

  • Posts: 910
Re: Angle grinder AGC for stainless steel
« Reply #5 on: September 14, 2020, 12:38 AM »
@PreferrablyWood, just a reminder , when working with stainless, remember not to slow the grinding wheel down on ferrous metal like a bench. It will contaminate the wheel and transfer to your work there after, allowing rust to set in later.

Does the new Festool grinder have a brake on it? I bought a Milwaukee grinder due to the fact it has a brake on it. Going forward I will only buy grinders that have a brake on them for the added safety from "the spinning wheel of death".

So what does Festool mean by this below as it isn't clear? You would think a braking motor would be in the top of features list, if it had it, but I read and searched the instruction sheet and found "brake" was not used a single time.
"Soft start-up, electronic overload protection, motor brake and restart protection"
https://www.festoolusa.com/products/cutting/cordless-angle-grinder/575348---agc-18-125-li-eb-basicus#TechnicalData

Offline Cheese

  • Posts: 7674
Re: Angle grinder AGC for stainless steel
« Reply #6 on: September 14, 2020, 03:35 PM »
So what does Festool mean by this below as it isn't clear? You would think a braking motor would be in the top of features list, if it had it, but I read and searched the instruction sheet and found "brake" was not used a single time.
"Soft start-up, electronic overload protection, motor brake and restart protection"

I also read the manual and as you've pointed out, a motor brake is never mentioned.

I did however come across these 3 items:

Recoil protection:
In the event of a sudden speed reduction, e.g. if the power tool becomes jammed in a separat­ing cut, the motor is switched off immediately.  To put the power tool back into operation, it must first be switched off and then on again.

After machining metal:
Blow out the inside of the power tool through the vents using dry, oil-free compressed air. Otherwise, conductive dust deposits may build up in­side the power tool. This can cause a short- circuit.

Do not use this power tool for polishing or sand­ing surfaces using diamond discs or for appli­cations involving diamond or hard ceramic discs.