Air scraper / Oscillating Multi tool for undercoating removal

[R-mm]

After using the dry ice, heat, chemical methods I am ready to graduate to the reciprocating/vibrating tool method to remove some in car and underbody coatings to do rust repair. HF has decently reviewed versions of both that can be had together for ~$60 My instinct would be to grab um both and see what works (or breaks).

https://www.harborfreight.com/6-piece-pneumatic-scraper-kit-95826.html
https://www.harborfreight.com/variable-speed-oscillating-multi-tool-63111.html

I debated adding the Bosch Oscillating tool to my 18v collection but at $200 I'm not sure it'd get enough use to warrant it.

Any other suggestions before I head to the Chinese Embassy?

 

[Dave455]

Last year I was helping a friend renovate his bathroom. He had removed all the wall and floor tiles the hard way, but we were left with two types of glue residue.

Thankfully I had my Fein Multimaster with me, and all the attatchments I got with it on a deal, including the scraper blade!

It just chewed through the job, no problems.

I know the Fein is top end, but a corded Bosch or Makita would probably have done as well.

I only have two observations : -

1) I know some folks tend to think cordless is always an improvement, but I don't think a cordless tool would have coped any where near as well in this instance.

2) I'm always finding new uses for his tool. I bought it to use as a sort of 'power chisel' for one job (a function it performs just fine) but I keep finding new uses for the thing. If I'm on any sort of house repair job I grab it as a matter of course now, together with every blade I own! So don't worry about not getting use out of it, you will!

 

[larry4406]

After using the dry ice, heat, chemical methods I am ready to graduate to the reciprocating/vibrating tool method to remove some in car and underbody coatings to do rust repair. HF has decently reviewed versions of both that can be had together for ~$60 My instinct would be to grab um both and see what works (or breaks).

https://www.harborfreight.com/6-piece-pneumatic-scraper-kit-95826.html
https://www.harborfreight.com/variable-speed-oscillating-multi-tool-63111.html

I debated adding the Bosch Oscillating tool to my 18v collection but at $200 I'm not sure it'd get enough use to warrant it.

Any other suggestions before I head to the Chinese Embassy?

I used the pneumatic version in your first link to scrape off the undercoat of my car while it was on a rotissorie. Worked very well using the simple straight "chisel" style bit. Make sure your compressor can keep up. Unit is loud so I wore hearing protection in addition to a face shield. Periodically I would add a few drops of machine oil to the air inlet fitting on the scraper.

 

[R-mm]

I bought the HF air scraper kit: https://www.harborfreight.com/6-piece-pneumatic-scraper-kit-95826.html

I'm driving it off a nice big compressor, I even sharpened the chisel a bit and it really is not up to the task of removing old undercoating. I can see it being quite useful for more delicate tasks like old gasket or paint removal but not thick, 50 year old undercoating.

I also bought the cheaper of the two HF multi tools, $15 with coupon: https://www.harborfreight.com/oscillating-multi-tool-62279.html
And it does a great job. I bought their three piece multi tool accessory set and the "flexible scraper" is the right thing for the job. https://www.harborfreight.com/Multi-Tool-Blade-Set-3-Pc-61827.html

 

[bcradio]

Last year I was helping a friend renovate his bathroom. He had removed all the wall and floor tiles the hard way, but we were left with two types of glue residue.

Thankfully I had my Fein Multimaster with me, and all the attatchments I got with it on a deal, including the scraper blade!

It just chewed through the job, no problems.

I know the Fein is top end, but a corded Bosch or Makita would probably have done as well.

I only have two observations : -

1) I know some folks tend to think cordless is always an improvement, but I don't think a cordless tool would have coped any where near as well in this instance.

2) I'm always finding new uses for his tool. I bought it to use as a sort of 'power chisel' for one job (a function it performs just fine) but I keep finding new uses for the thing. If I'm on any sort of house repair job I grab it as a matter of course now, together with every blade I own! So don't worry about not getting use out of it, you will!

Bosch is just as good as Fein in this department now.

 

[Parrothead]

I've used the older version of this for quite a few years in a professional and home environment. 2 year warranty vs HF 90 days.

Genesis GMT25T 2.5-Amp Variable Speed Multi-Purpose Oscillating Tool https://www.amazon.com/dp/B00KX4OK9A/?tag=atomicindus08-20

 

[R-mm]

It looks good and is more powerful and variable. I got the Hf Because i was there. It being $15 didnt hurt.


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[Monte]