38 replies to this topic

[Carlperkins]

ok so I have an anodised front rim and I want to raw it.

just bought some B&Q's finest caustic soda. It says to add 100g of soda to 1 litre of water.

ill obviously put goggles, mask and marigolds on...

then what? do I put the mix in a glass bowl? plastic bowl?

and do i apply with a sponge? or will it eat the sponge?

and lastly.. the join in the rim, will the soda affect the join?

Cheers for any help.

Carl.

[Ali C]

add it to hot water for a stronger effect.

I find a tooth brush is perfect for the job, a sponge will probably do too, but yeah, just add it to the water, it may bubble a bit depending on the temperature you use, apply to rim, then rub/rinse off. The join will be fine.

[Carlperkins]

Ali C, on 05 February 2012 - 05:36 PM, said:

add it to hot water for a stronger effect.

I find a tooth brush is perfect for the job, a sponge will probably do too, but yeah, just add it to the water, it may bubble a bit depending on the temperature you use, apply to rim, then rub/rinse off. The join will be fine.

cool, how long do i leave it on the rim for? or is it just an on-off job?

cheers mate.

[Ali C]

depends how strong the concentration is.

When you put it on you may not get a reaction straight away, but you'll see it start to fizz and stuff, you can leave it on for a while, but try rubbing it off after a few seconds (10-20) to start with and see how it goes. Just use a bit of common sense and you'll be ok, you be doing VERY well to ruin the rim either way.

Oh, you may find the rim goes a dark brown/black, that's fine, that will rub off with a cloth or polish.

[Carlperkins]

alright nice one ali, ive used nitromors alot and stripped bars, frames etc. got that down to a "t".

i just thought i'd double check cos if i end up destroying my rim i cant afford a new one at the mo. cheers for you advice mate.

and yeah im gonna be polishing it up with autosol.

ill let you know how i get on.

[isitafox]

Speaking of caustic soda here's your black crank bolts!

[MonsieurMonkey]

You won't need goggles and shit, just gloves, and don't get it on yourself/your clothes. 100g / 1l of water wasn't good enough for me, neither was 500g / 100ml, but I didn't get any paint off at all. So it could have been the thickness of the Zoot's layers. Like a titanium onion.

[Chris Borneo]

Don't use goggles? This coming from someone who's trying to remove paint with caustic soda. May want to do some More research before dishing out the advice.

Follow what Ali said and you should be alright. I had to almost fully dissolve a seatpost to get it out of a streel road bike once but it took about 3 days constantly immersed in the stuff to do it.

[Carlperkins]

yeah followed ali's advice to the dot, worked perfectly. 100g to 1 litre, rub on, wait bout 30 secs then wipe off, afterwards a quick wipe over with autosol. sorted.

nice job with the crank bolts istafox! looks mint!

ill put some before and after pics up tomorrow,

cheers guys! carl.

[MonsieurMonkey]

Chris Borneo, on 05 February 2012 - 10:14 PM, said:

Don't use goggles? This coming from someone who's trying to remove paint with caustic soda. May want to do some More research before dishing out the advice.

Erm, I made a mix of the shit 50x stronger than what it says to do, is that enough research for you? Stop being a pussy.

[Robwalker]

stop being a pussy? People like you f**k me off, no compliance for your own safety, all you care about is yourself and not how your actions could f**k up someone else's life. This is a guy who lost his wife, home, and eyesight from caustic soda. It's dangerous stuff, you had it right in the first place with goggles.

http://www.hsmemagaz...?article_id=589

“There was a set of goggles three foot in front of me,” said Ken. “The moment I made the choice not to put them on, I destroyed my family’s normal life. I cost the company £2.6 million. I put 35 people into counseling.”

[MonsieurMonkey]

Haha, people like you f**k me off, no compliance for my own safety? What the f**k does that even mean.

I mixed in a high sided container, slowly adding about 10g at a time at arms length. I know what could happen, I know what happens when you mix shit like that. I used to do it for a living with shit a lot worse than caustic soda. If you're a f**king retard then yeah, put your goggles and radiation suit on.

But just so you know, you might want to put goggles on when you make a brew next, boiling water and sugar will take your eyesight just as easily. Or fat for that matter, grilling or frying anything fatty, the shit spits into your eye, see you. I didn't read that article, but I'm sure it wasn't the goggles that were the problem, there was probably a lot more user error in there as well.

Edited by MonsieurMonkey, 06 February 2012 - 08:26 AM.

[Chris Borneo]

Don't suppose anyone cares if you wear goggles or not. Just don't go pushing your slack approach onto other people and think everyone's gonna say yeah, that's cool.

Let's face it mixing caustic soda and making a cuppa is a pretty poor comparison. Tea won't blow up in your face if you mix it the wrong way round.

[dann2707]

If its any consolation I rawed by frame in my uni shared bathroom. Did a super concentrated mix and didnt use gloves. Got a few splashes on me which hurt alot. But luckily no one died. Although saying that I havent heard from Mike in a while...

[Carlperkins]

@ MonsieurMonkey.. yeah its probably a good idea to wear goggles. To be honest I couldn't care less if you don't wear them when your doing it but its probably not a good idea to tell others not to wear them.

im not saying your gonna splatter your face with it everytime but the one time it does happen you will regret not putting them on.

for the sake of looking like a twat for 10 minutes its worth saving your eyesight. "better safe than sorry"

its like saying stop being a pussy and wear a tshirt on my CBR1000 (motorbike) instead of wearing a leather 1 piece. yeah its all fine and dandy till you fall off and leave a nice meat skid of your own skin 300 yards behind where the car hit you. Might as well wear a 1 piece in the first place and avoid a full body circumcision.

thats my 2 cents..

and anyway, i rawed my rim lovely and did it safely, then cleaned up after myself so no one else got that crap on them.

SUCCESS!!

[MonsieurMonkey]

Just to put this into perspective for your weeping pussys. I worked with maybe 40 litres of 200 degrees acid on a hot plate in front of me, 5 days a week, different types of acid, from pretty pathetic Conc. Hydrochloric, to the rather randy Hydrofluoric, I'm quite happy for you to wear goggles when making up 500ml of 20% caustic soda, go mad, but unless you've got dog shit for brains, it won't splash, it shouldn't even react that vigorously. If you know what you're doing, and you're careful, then shit generally won't go wrong.

If you're on a motorbike, and you get hit by a car, don't matter what you're wearing unless it's a zorbing ball, you're f**ked. And the tea comparison might not be perfect, but have you ever got boiling water with sugar in it on your skin? Even so, what about spitting fat? Get that in your eye, see you.

We take everything way too seriously these days, and we're all so scared. I hope you wear helmets, elbow pads, knee pads, wrist guards, a back bored and you probably need a nappy as well when you're riding your bike.

[Robwalker]

sounds like all that acid has eroded your common sense. It takes 2 seconds to put on some goggles, time can't buy a new set of eyes. Chemicals are scary, there's no being a man about it, don't f**k up your life, and don't f**k up anyone else's. Its called responsibility.

[MonsieurMonkey]

Okay, I'll admit, if you have downs, put your caustic soda into whatever, then just dump your boiling water on, the shit's gonna erupt. But who the f**k in their right mind would do that? Don't we all know that when mixing you add slowly? Or can't any of you cook either?

[Robwalker]

MonsieurMonkey, on 06 February 2012 - 02:33 PM, said:

But who the f**k in their right mind would do that? Don't we all know that when mixing you add slowly?

A young rider who has had no experience and comes onto a forum for some advice on safety and method. Grow up, accept responsibility, and maybe you could stop someone from hurting themselves by making them aware of the dangers involved. I'm sure when you started your work on 200c acids you had some training, or did you? Because apparently it's as simple as cooking, and everyone knows how to do that.

[MonsieurMonkey]

Would you throw anything into boiling water? Would you even touch something that was 200 degrees? I know I wouldn't. So yeah, when it comes to danger, that shit is just as simple regardless. I get your point, and I understand that if downs syndrome Bob would have been asking I might have f**ked up his life (More than it already was), but I have seen Carl post before, I know he's about 20 or so, I assume he isn't a massive dong and would know if it can take paint off metal, then you don't throw it around. Clearly I assumed way too much and should have acted like he was a 3 year old with a learning disability.