Question 1

I have a tub surround to the ceiling that I would like to remove the grout. How long would you think it would take using this blade. Tiles are 3x3.

Accepted Answer

Not enough information. Is the surround a single piece that' s grouted at the tub, is it made of large tiles, is it made of small tiles...? This blade is very efficient, but the time is going to depend on how many linear feet of grout you have to remove.A more relevant question is how many feet of grout will the blade remove before it wears out. That answer is also dependent on your situation. Is the grout sanded or unsanded? How wide is the joint, 1/8" , 1/4" , wider? (This blade will not work on anything narrower than 1/8".) How old is the grout?Sanded grout will generally take longer and wear out the blade faster. Older grout is frequently harder than newer grout.And note that the blade is rounded, so if you need to get into corners you' ll need another kind of blade for that, something like a DEWALT DWA4242 Diamond Flush Cut Oscillating Blade.On average, I' d say that one blade will do the line between tub and surround before it wears out. At the price, get a second blade and swap out as soon as you notice your progress slowing. If you use the blade past its intended life, you may get overheating marks on a porcelain tub or damage to a Corean tub. Ditto for " don't push". If you push, the blade will wear out faster and you WILL get overheating.

Question 2

how thick is the blade?

Accepted Answer

APPROX 1/8"

Question 3

Will this cut brick?

Accepted Answer

It depends on the brick, but it should at least make a line of some depth in most brick, especially 'clay' brick. If you need to cut refractory or porcelain coated,or just plain porcelain brick, it ought to work, but an ablating abrasive wheel would be a better choice, note that either will put out a goodly cloud of dust but the wheel will put out more and finer dust. Use a mask and cross ventilation for either process. A diamond blade will likely be a better choice, last a bit longer and cut more cleanly. Same warning about the dust!

Question 4

Will this cut into concrete ? If so, what depth ?

Accepted Answer

No, this blade is recommended for grout removal.

ASIN	B00FRMZVMI
Best Sellers Rank	#63,104 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #29 in Oscillating Tool Blades
Brand Name	DEWALT
Color	Multi
Compatible Devices	Oscillating Tools
Compatible Material	Grout
Country Of Origin	USA
Customer Reviews	4.6 4.6 out of 5 stars (1,932)
Global Trade Identification Number	00885911319003
Included Components	Dewalt - DWA4220
Item Dimensions L x W	12.2L x 14.6W centimeters
Item Type Name	Dewalt - DWA4220
Item Weight	0.17 Pounds
Manufacturer	DEWALT
Material Type	Carbide
Model	DWA4220
Number of Items	1
Number of Packs	1
Part Number	DWA4220
Style Name	Industrial
UPC	885911319003
Unit Count	1 Count

DEWALT Oscillating Tool Blade for Grout Removal, Fast Cutting, Carbide (DWA4220), One Size

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