Underseal gun pulling from container?

[owas]

If I cut the pick up tube shorter and attach a tube to a paint can of wax, will it still spray??

 

[voipio]

Uhhh? More details would help.

 

[Al Strachan]

is this to have the can remote from the gun to give better access?

 

[Matchless]

yes provided the waxoil is not too thick, we used to warm it up in a bicket of hot water and also dilute with (used) engine oil for spraying, even with warming it would not flow well when it hit a cold panel or inside a cold chassis member, not so bad this time of year, sometimes when we carried out an inspection using an endoscope we found that the waxoil had started to set then the next layers backed up against the ridge formed by the first lot, it NEVER covers half as well as you thought it had!

the above is more about waxoiling as I have just got up and did not read the post properly, with traditional underseal I used to again dilute with old engine oil for the first and last coats with a thicker layer in the middle, the first was more of a mist to get into the joints and double skin joints, it soon set, you don't want a thick layer just sitting on top of the metal, depends on what underseal you are thinking of.

 

[Dcal]

If I pick you up correctly you are just wanting to use a different container for the wax?

If that the case then no problem.
The gun picks by suction so as long as the head (distance between the wax and the nozzle) isn’t too big and the container is open to atmosphere, (small hole in the top) you should be fine.

 

[julianf]

I've not had a load of luck with those Shultz guns.

I keep eyeing up the Sealy pressure one on eBay, but they're about £80 : (

 

[Al Strachan]

I've not had a load of luck with those Shultz guns.

I keep eyeing up the Sealy pressure one on eBay, but they're about £80 : (

there was a guy selling off the pressurised pot ones recently for 50 quid. they were selling off cheap due to rust inside the pots. a night soaking in phospho sorted that. Great bits of kit, but mine didnt work for heated dinitrol 4191 and would still need thinning unless i'm doing it wrong!

 

[owas]

It is to spray this stuff all over the underside and into the cavities.

https://www.arc-rite.co.uk/corroless-cci-450-clear-corrosion-inhibiting-wax

Are the cheapy underseal guns no good for that then?

What about a parrafin gun?

 

[Al Strachan]

i was using the pressurised pot for Dinitrol ML. not sure of the viscosity compared to your link above, but ML has the consitency of old engine oil, and works fine with the pressurised pot. Never tried it, but would likely be fine out of a regular spray gun with 1.8+ tip.

Using the cheap underseal guns, anything thats quite thin i put a restriction in the pick-up tube. works a treat. For spraying the stuff above, i would just decant into an empty shutz can and use the gun as per normal.

 

[badabec]

I've not had a load of luck with those Shultz guns.

I keep eyeing up the Sealy pressure one on eBay, but they're about £80 : (

I paid about £50 for mine nearly 30 years ago, they are good. As long as you remember to release the pressure in the pot before unscrewing it! You need a swivel air line adaptor otherwise you can't stand it up without disconnecting the air line. And don't lend it to your neighbour, it will come back with the hook snapped off.

 

[mr haynes]

Used these for years without problems, other than looking like a dalmation after....

https://www.ebay.co.uk/itm/Sealey-A...601479&hash=item340c1279b4:g:-DkAAOSwgRRc9rl3

Sealey Air Operated Underbody Coating Gun 1/4" BSP Underseal Stone Chip

5 product ratings

Condition:
New

Volume pricing:
1-1 £16.95 (each)
2+ £16.10 (5% off each)

 

[Dcal]

Pressurised pot for cavities and inside box sections etc, schutz gun will be fine for the underside but if it's thin it will go on too thick. A cheap spray gun will put it on better.
Haven't tried @Al Strachan tip of a restriction on the pickup but sounds like a great idea.
Parrafin gun would work as well for the underside.

 

[Al Strachan]

Super complex design - but i pretty much use for everything except the coldest thickest goop. Much better control and better than hurling half a can of shutz in 10 milliseconds!

 

[Dcal]

I will give that a go the next time I'm using it.
I use a schutz gun for spraying TFR and slowing it down would be worthwhile.

 

[bricol]

Wind the air pressure down - some of the flash guns allow you to do it on the gun - most I've ever paid was 9 quid for one. Occasionally have to do a full strip down to unblock one as it sets in side before I next use it - I used to blast away with white spirit to clean them out afte ruse, but don't bother now.

 

[bricol]

there was a guy selling off the pressurised pot ones recently for 50 quid. they were selling off cheap due to rust inside the pots. a night soaking in phospho sorted that. Great bits of kit, but mine didnt work for heated dinitrol 4191 and would still need thinning unless i'm doing it wrong!

You are doing it wrong.

You can adjust the trigger points for air on and then spray - you may have it set so the spray control isn't open wide enough.

Even at 80 quid a gun, the amount of time and effort it saves compared to faffing about with a suction type gun is worth it.

 

[Al Strachan]

Wind the air pressure down - some of the flash guns allow you to do it on the gun - most I've ever paid was 9 quid for one. Occasionally have to do a full strip down to unblock one as it sets in side before I next use it - I used to blast away with white spirit to clean them out afte ruse, but don't bother now.

i've tried that. lowering the pressure on the shutz guns without restricting the inlet gives quite a lumpy texture if i remember. restricting the suction and keeping the pressure up give a nice factory looking finish.

You are doing it wrong.

You can adjust the trigger points for air on and then spray - you may have it set so the spray control isn't open wide enough.

Even at 80 quid a gun, the amount of time and effort it saves compared to faffing about with a suction type gun is worth it.

Might to have play next time. so your are talking about the adjustment behind the trigger? i tried this initially and still couldnt get 4941 to spray nicely from the extension wand. might have to give it another try.

 

[Matchless]

If you use a shutz gun sucking from an open pot do not push the outlet against the car whilst spraying, the air pressure has to go somewhere, you will never go rusty if you do! and you may need an emergency hair cut!!!!

 

[bricol]

i've tried that. lowering the pressure on the shutz guns without restricting the inlet gives quite a lumpy texture if i remember. restricting the suction and keeping the pressure up give a nice factory looking finish.



Might to have play next time. so your are talking about the adjustment behind the trigger? i tried this initially and still couldnt get 4941 to spray nicely from the extension wand. might have to give it another try.

Yes, although I seem to recall another adjustment. Only time I've ever had any problem, it was sillily cold and I probably shouldn't have been trying. Sprayed woxoyle, dinotrol, noxodol 700, underbody wax from Bilt Hamber and similar from Rustbusters. I did have to unblock the misting nozzle a few times until I learnt to unscrew it and blow it though when I finished.

 

[owas]

I use Bilt Hamber now and this comes in pressure cans (aerosols) pressurised to 70 PSI and for the cavity coating you get a long 600mm lance for every 2 cans you have, these atomise the spray and this attaches to everything in atomised form and self heals if it gets damaged and you can use the cans in any position.

Ive got a few of those as well,
I thought they were going to come with the conventional 360 degree lance but I only got a short normal lance with them, that only sprays in one spot,used alot of it inside any of the cavities on my subframes.

I think i will use a normal spray gun to coat the underside, then try the underseal gun in the cavities.