Frit-Happens !

Technical Forum => Studio/workspace/setup/equipment => Oxycon/Oxygen/Propane => Topic started by: amewat on March 21, 2009, 04:35:28 AM

Title: MAPP gas??
Post by: amewat on March 21, 2009, 04:35:28 AM
hi i cannot find mapp gas anywere. well i have only looked at homebase andn b&q so any other ideas were i can get this annoying gas lol.
Title: Re: MAPP gas??
Post by: ageinghippy on March 21, 2009, 05:38:05 AM
i used to get my mapp gas from tools4trade. https://www.tools4trade.com/default.aspx
gas is cheaper and i never had a problem. b & Q sometimes keep it under the counter.........so its always best to ask.
hope this helps you
tina x
Title: Re: MAPP gas??
Post by: Helen G on March 21, 2009, 07:36:48 AM
I used to get mine from The Plumb Centre a plumbing merchant
Title: Re: MAPP gas??
Post by: bluefairy on March 21, 2009, 08:00:24 AM
In my B&Q it's with the plumbing supplies x
Title: Re: MAPP gas??
Post by: Trudi on March 21, 2009, 08:16:41 AM
used to get mine from Plumb Centre too!!
Title: Re: MAPP gas??
Post by: mizgeorge on March 21, 2009, 11:19:24 AM
Most builders merchants have it too
Title: Re: MAPP gas??
Post by: jobead on March 23, 2009, 08:59:52 PM
I've also bought some from tools4trade website but one of the reasons you may be having problems is that the old type MAPP gas isn't made anymore and the only type you can get is the new MAP PRO which basically does the same job but has a different make up (I'm not going to do the "science" bit!) Apparently there was only one firm that produced it and they are now defunct.

I ordered 12 cans of MAP PRO which from memory meant I got them for about 8 quid each, there is slightly less gas in them than the MAPP ones but only slightly and almost half the price anyway.

I had read on some US sites that the new gas can burn dirty and ruin some colours but I can't say that I have had that problem myself.

Hope that helps your search  ;)

Jo
Title: Re: MAPP gas??
Post by: Redhotsal on March 23, 2009, 11:36:54 PM
Arrgghhh! Mapp gas- Don't bother. Invest £100 in a bulk propane set up and you'll never look back.

by the way - the main suppliers were/are? Weller (US) Rothenberger (Germany) and Bernzomatic (US). I don't believe it is imported from anywhere else. Hence the costliness of it. Last time I looked it was a tenner but I've heard of people paying anything up to £19 for a canister (which will last you only around five hours!)

Check it out: http://www.transtools.co.uk/store/prod_6885/plumbing-tools/gas-cylinders-and-canisters/rothenberger-mapp-gas-cylinder-453gms.html
Title: Re: MAPP gas??
Post by: flowerjasper on March 23, 2009, 11:49:52 PM
listen to sal!!!
best advice i had when i started was to go on bulk propane,
soooo much cheaper, doesnt freeze and you can use the connectorsif you want to up grade,
sandy
Title: Re: MAPP gas??
Post by: amewat on March 24, 2009, 01:21:52 AM
well wat does bulk mean? do  u need more room? ive got no were really to do it so i was gonna do it out in the garden lol hence the use of a canister.does bulk mean u need a big thing of gas an an oxygn  machine? its all so confusing arghhhhhh.
Title: Re: MAPP gas??
Post by: Lush! on March 24, 2009, 06:50:39 AM
Bulk means the big red container of propane gas and hosing to connect it to the hothead. 

Propane bottles come in various different sizes, the smallest of which, according to www.calorgas.co.uk, is 3.7kg and only measures 340mm high by 240mm diameter  :)
Title: Re: MAPP gas??
Post by: Amber on March 24, 2009, 09:04:19 PM
I was in B&Q today and noticed that Mapp has gone up from £10 to £15 in the space of a few months...so go for the bulk, it's faaar cheaper (and better). You won't regret it!  :)
Title: Re: MAPP gas??
Post by: amewat on March 27, 2009, 03:00:11 AM
so why donmt they sell propane by itsel in tiny cannisters? like mapp gas? and why does mapp gas excist if u can use just propane instead of a mix lol. an why do people use oxeygen machines lol soory for annoyin u all im just relly confused and i like to understand things.
Title: Re: MAPP gas??
Post by: amewat on March 29, 2009, 02:13:12 AM
hi culd someone please ansewr this for me thanks  :)
Title: Re: MAPP gas??
Post by: Lush! on March 29, 2009, 08:32:49 AM
Because neither Mapp gas nor propane are exclusively for use by beadmakers!  They both have other uses, but they are both useable for making beads.

Oxygen concentrators are primarily used in hospitals, most lampworkers use reconditioned machines that are no longer suitable for hospital use.  They are used as an alternative to bottled oxygen.

Does that help?   :)
Title: Re: MAPP gas??
Post by: Redhotsal on March 29, 2009, 10:40:15 AM
You CAN get propane in the same size cylinders as the Mapp gas cylinders. They're blue.
They WILL work with your hothead but they're not nearly as good as getting a large cylinder because of the problems with pressure drop. They also don't seem to burn as efficiently (in my opinion) as the bigger cylinders.

Mapp gas is propadiene, which is basically pimped up propane - it will burn hotter and more efficiently. It makes better use of the air that the hothead sucks in through that nosy airhole system at the bottom of the torch head. You need to have air in your gas mix or your glass colours will turn sludgy and grey/brown. The little propnae cylinders don't seem to make the best use of the air going in - but they will work. However, you will get more sludgy beads because you haven't got enough air in the system. Bulk propane seems to make the torch work better as it doesn't suffer from the annoying pressure drop problem that you get with the little cylinders, hence the burn temperature stays up and the flame doesn't shrink in size over a period of time.

Get a bulk propane hose from Martin Tuffnelll and then go and get a 3.9kg bottle of propane (or 6kg if you have the room as 6 costs the same as 3.9kg). The total cost of hoses, reg, flashback arrestor (all part of the bulk propnae kit) will be £110 and the cost of a cylinder will be about £15, although if you are buying one for te first time they'll rush you for a £25 "Contract". See if you can blag an old one from somewhere - try the dump - and you'll save yourself £25.

I've said you need "air" but in fact "oxygen" is really what you need. Although you don't require oxygen for the hothead. If you go for a bigger torch you'll need a separate propane supply and a separate oxygen supply. This is where the oxycon comes in - but you won't require it for the hothead.

If you are really confused by all this you might want to save up and have a lesson with someone? A decent teacher should be able to talk you through all of this. It IS a struggle when you are trying to find all this out by yourself. I teach gas and equipment set up as a standard part of my basic lesson.
Title: Re: MAPP gas??
Post by: lorrainelee on March 29, 2009, 11:06:15 AM
Quote from: Redhotsal on March 29, 2009, 10:40:15 AM
If you are really confused by all this you might want to save up and have a lesson with someone? A decent teacher should be able to talk you through all of this. It IS a struggle when you are trying to find all this out by yourself. I teach gas and equipment set up as a standard part of my basic lesson.

Having had a lesson with Sally I can confirm that her advice on setting up your equipment is very thorough and very, very useful.  I'd done all the reading up prior to my lesson but, having someone who knows what they are talking about showing you what to do is priceless.
Lorraine
Title: Re: MAPP gas??
Post by: julieHB on March 29, 2009, 11:52:42 AM
I am totally with Sal!

Our local recycling centre offers the orange propane gas cylinders for £10 (important, they must be of the orange type, like the ones for gas BBQs). I got myself the 6kg ones, but you need to and see which ones they have. It cost £12-£15 to change it, but it lasts for about 60 hours. The math is easy, and even if you pay up for the connections it won't take long before you become more cost-efficient than keep buying Mapp (or similar) cylinders. I only bought 2, and then switched to bulk.

Another more important aspect with using bulk for me was that I didn't have to hurry before the canister froze up, and I didn't have to discard a half made bead!! So much less stressful  :)
Title: Re: MAPP gas??
Post by: amewat on March 30, 2009, 11:04:18 PM
thank you so much guys an sal u should write a book!!. lampworking for dummies lol cause that ws  the simple straight forward info i was looking for lol :) and i really wish i could get a lesson butt unfort i live in northern ireland and i dont no of anyone who does it here that wold be easy to get to. mayb ill b the first lol. thanks again.
Title: Re: MAPP gas??
Post by: Rockpooljewels on March 30, 2009, 11:20:34 PM
I got my Mapp gas last week in B&Q, it was £15!!! Got my hothead today, and I have to say..5 glass blobs later and the canister now only feels half full!!! I am going to have to go to bulk immediately, because I can't afford to teach myself this if I am paying £15 every few blobs..lol

Already after 1 day I can see that bulk is the only way. If you can do it then do, don't even waste the first £15.

Hope this helps,

Mandyx
Title: Re: MAPP gas??
Post by: Sarah999 on March 31, 2009, 12:59:07 AM
Hi.

I have been looking for MAPP gas too as I have just bought a hot head. It is really expensive in B&Q (£15.00)

I found that on Tools4Trade it is only 8.99 for one canister, or if you can afford to buy 12 they do them for 7.99 each.

It is also only £3.99 postage, so if you buy say 3 (as I did) that only costs £30.50 ish -  About the same as 2 canisters from B&Q.
It is also next day delivery so you only have to hold out for a day!

So if like me you cant afford the connector then buying online will save you £15 each time you buy 3. (Pbvilusly the more you buy in one go the more you save though).

I was also told that using propane will not only make your beads go sludgey but will also damage your torch after a while, is this true?
xxx
Title: Re: MAPP gas??
Post by: Redhotsal on March 31, 2009, 09:03:54 AM
Well, they make a big thing of the hothead being designed to run on Mapp gas rather than propane, but I've had one of my hotheads for about five years and it's only ever been run on propane and is still going strong.

What they seriously don't like is being turned off too tightly - that'll damage them and being used upsidedown to get to a tricky pipe when doing the plumbing. Both of those techniques have been widely used by my other half and he successfully managed to muller my original hothead. Although - he took it all apart and cleaned it up and it does again work. But seriously - I wouldn't worry about any damage coming from propane.
Title: Re: MAPP gas??
Post by: Redhotsal on March 31, 2009, 09:07:53 AM
Meant to add - because the propane will burn at a lower temperature than the Mapp you will be more tempted to:
a) turn up the flame and b) work lower down in the flame. If you are not careful this WILL make the beads go sludgey. You will have to accept that you will be slightly slower working on propane than Mapp - i.e. you'll need to work further out in the flame and if things are going sludgy turn the flame down a little, but really and truly most people won't notice the change after a session or two. It's worth it when you look at the difference in cost.

Sorry - edited to say "lower down in the flame"
Title: Re: MAPP gas??
Post by: Rockpooljewels on April 01, 2009, 09:02:13 AM
I am taking your advice Sal, and going bulk...

My DH is a gas plumber so luckily he will set me up a little cheaper, he gets discount on the type of stuff needed to go bulk.
My canister of Mapp is officially empty after.....wait for it...3 hrs of torch time...it just isn't enough to justify even £8 I don't think. And the ice on the bottom after about 20 mins just made the flame sooooooo slow...nah can't be a***d with it.

Soo twiddling my thumbs today while I wait for the gas bits and bobs to arrive  :(

Looking at the standard of beads acheived by the hothead/propane set up I can see that it's not going to be a problem...well when I learn how to do it that is..lol

Anyhoo TTFN

Mandyx






Title: Re: MAPP gas??
Post by: leisler on April 29, 2009, 12:13:36 AM
If you're still looking for Mapp gas this firm is based in Bangor and is much cheaper than B&Q (both the Newtownabbey and Holywood branches stock it in the plumbing section).

http://www.gasproducts.co.uk/acatalog/Bullfinch_453gm_Mapp_Gas_Cartridge.html
Title: Re: MAPP gas??
Post by: Katiequiggle on April 29, 2009, 06:58:12 AM
Mandy, I only ever get a dirty bead when I first put a new cansiter on, sometimes it needs half an hour before it burns totally clean, and sometimes towards the very end of a canister.  All my beads have been made on a hothead with bulk propane.  You will really notice a difference especially in the time factor.  I turn my torch on about 10am and it doesn't got off apart from a loo/lunch break until the kids come home from school and this is about 3 times a week, a 3.5kg (the heaviest I can carry my self or I'd get a bigger one) last me at least a couple of months probably more, I must mark it on the calender to see.  Its fab not having to worry about running out and it only costs me £21 for a refil so its paid for itself already. I only ever had 2 mapp tins, though I do keep one for when I do the odd demo out and about.

Its not a lot slower well to be honest I can't remember what its like with mapp now and I know lots of us on Frit use bulk with no problems at all.  I actually think that a hothead for a beginner is better than a torch that uses propane and oxygen because it is slower and this gives you more time to think about what you are doing.

Good luck and please let us see your beads.

Kate x
Title: Re: MAPP gas??
Post by: lemon kitten on April 29, 2009, 08:09:54 AM
I can only agree with all Sal has to say.  I NEVER went down the Mapp Gas road when I first started, I just got the bulk hose from Martin and blagged a red 19kilo prophane cannister from a mate!  Mapp is C**p.

Janey x
Title: Re: MAPP gas??
Post by: Zia on May 20, 2009, 05:05:20 AM
been reading this and thinking of "upgrading" my little Rothenberger set up for ...well something thats not going to cost a fortune!

You all have mentioned things like more gas, oxygen and a hot head..

Setting up a good torch with oxygen etc is really exp here, and then I would really need a proper annealing oven first.

no point in making good beads that arent annealed properly...or so it seems

wonders where one gets a hothead via internet and if its on a pipe...how does it "stand" up... I have a fixture "homemade" that holds the bottle atm...but a pipe....
I am not ready to use oxygen yet ...

any suggestions would be welcome....

smiles

Title: Re: MAPP gas??
Post by: squirsygirl on May 20, 2009, 07:19:36 AM
Tufnell's your best bet:

www.tufnellglass.com (http://www.tufnellglass.com)

I think most of us with HH's have a way of securing the torch - I'll try and post a pikkie later.

But beware, you'll all too quickly become addicted!


Kirsty
Title: Re: MAPP gas??
Post by: Katiequiggle on May 20, 2009, 04:06:25 PM
My Father in law made a bracket thing that attatches to my workbench and then my  hothead attatches to that via a big jubilee clip.  Its very strong and stable and the torch doesn't move once its in place.
Title: Re: MAPP gas??
Post by: sarah t on May 20, 2009, 04:36:15 PM
you are in austria zia ...try .....

www.glassworks.be

might be a better deal than shipping from uk

....some love the hothead  and produce fantastic beads on it ....but it drove me nuts after about two weeks .......personally think the hothead should be remaned !!..so once you have it keep saving those pennies ..its just the start lol !!
Title: Re: MAPP gas??
Post by: Katiequiggle on May 20, 2009, 04:41:35 PM
I would swap my hothead tomorow but I simply can't afford it.  Someones feet always seem to grow an extra cm at the wrong time or the dog needs the vets or a tooth needs filling etc.  So the hothead stays.  Its not that bad though, its been a jolly good introduction to lampworking and I think its quite good that its slow because it gives you time to think about what you're doing.
Title: Re: MAPP gas??
Post by: TiaraHelen on May 20, 2009, 07:46:55 PM
Quote from: Katiequiggle on April 29, 2009, 06:58:12 AM
3.5kg (the heaviest I can carry my self or I'd get a bigger one) last me at least a couple of months probably more

Oops - don't you mean 13.5kg Kate?

I bought 7 MAPP gas cans (6 from tools4trade), and then went to bulk, wish I'd saved the cash and gone straight to bulk propane after using the first cannister of MAPP - 4 hours' trial was enough to know I wanted to melt glass ALOT.