|
kip
|
|
|
Group: Forum Members
Posts: 32,
Visits: 99
|
Hi, I got some problems with the Easy-Lease Mould Cleaner .
I want to make new molds from vinylester gelcoat and resin for infusing and maybe later prepreg .
Before I always made my moulds from normal gelcoat and polyester resin so I used only wax what never gave any problems .
But now with the vinylester products I had problems demolding the moulds from the normal polyester parts with normal wax .
When I got the vinylester mould ready I infused some parts and it worked verry well no release problems with normal wax .
Now I wante dto make a new vinylester mould from a carbonfibre race parts and again the vinylester mould wouldn't release from the arnon fibre part .
So now I wanted to use the Easy-Lease Chemical Release Agent
I used a new polyester part I pulled from a old mould of me , polished it to mirror finish and then I cleaned it with the Easy lease mould cleaner and then the looked like the pics.
When I use the mould cleaner on a unpolished part it looks fine and stays the same look .
|
|
|
|
|
Hanaldo
|
|
|
Group: Forum Members
Posts: 2.5K,
Visits: 28K
|
Does the polish you are using have a wax or silicone in it? These are often added to buffing compounds to increase shine, unfortunately they are no good for composite work as the shine comes off with the solvents in the mould cleaner. Can you try another polish?
|
|
|
|
|
kip
|
|
|
Group: Forum Members
Posts: 32,
Visits: 99
|
I'll have a look tomorrow .
Maybee thats also the reason why my parts wont demold when using the vinylester gelcoat ?
|
|
|
|
|
kip
|
|
|
Group: Forum Members
Posts: 32,
Visits: 99
|
Hanaldo (16/01/2015)
Does the polish you are using have a wax or silicone in it? These are often added to buffing compounds to increase shine, unfortunately they are no good for composite work as the shine comes off with the solvents in the mould cleaner. Can you try another polish? Hi , Here is the polish doesn't got silicone in it as you can see . Today I demoulded a part from a rvs steel tray that I prepared with easylease it was a brand new tray , I cleaned it first with the easy lease cleaner and it looked really great and shiney after the easylease . I had 4 layers easylease on it with 20 minutes in betwen and 1H30 minutes after last layer I waxes 1 time with honeywax before laying vinylester gelcoat . Now the Part did demould well but I got the strange markings on the RVS part and same in the gelcoat of the part .
|
|
|
|
|
Hanaldo
|
|
|
Group: Forum Members
Posts: 2.5K,
Visits: 28K
|
Looks like you applied the chemical release agent too heavily so it left a residue. You really don't need much at all, barely enough to wet the surface. If you wipe it on and you can see it bead up or fish eye or anything like that then it's too heavy. You want to wipe it on, see it look slightly wet and then it should evaporate.
|
|
|
|
|
kip
|
|
|
Group: Forum Members
Posts: 32,
Visits: 99
|
Hanaldo (18/01/2015)
Looks like you applied the chemical release agent too heavily so it left a residue. You really don't need much at all, barely enough to wet the surface. If you wipe it on and you can see it bead up or fish eye or anything like that then it's too heavy. You want to wipe it on, see it look slightly wet and then it should evaporate. Thnx , so now I can clean it all off with the easy lease mould cleaner and put the 4 layers back on it but much thiner . when it was all evaporated u couldn't see anything like fish eyes or anything just a smooth shiny part . Any Idea what happend to the polyester part of me now I know there isn't any silicone in the polish ?
|
|
|
|
|
Hanaldo
|
|
|
Group: Forum Members
Posts: 2.5K,
Visits: 28K
|
Yeh unfortunately because you applied a wax over the top, you will need to completely clean the mould off before reapplying the chemical release agent. It isn't really necessary though, you should just be able to polish those marks out of your parts without much effort. Depends on whether you need to pull 1 or 2 parts from them or 50 I guess. Also no, you won't see much once it has evaporated. But as you wipe the film on, it should just stay as a lightly wet surface. If it beads up or fisheyes or forms anything that looks like droplets, then it is much too heavy. Anyone's guess as to why your part stuck. Wax is a bit inconsistent for me, I would never rely on it. Works great for alleviating surface tension issues, but that's all I ever use it for. You know there is no silicone in your polish, but do you know if it contains wax? There can be a difference between simple buffing compounds and polishes that claim an extra gloss. Buffing compounds are almost more like a super fine sand paper that just remove very small scratches, and often these are all polishes are. But some manufacturers include a carnauba wax or similar to yield a higher, albeit false, gloss. This then gets removed when you use a solvent cleaner and you end up with your dull looking part.
|
|
|
|
|
kip
|
|
|
Group: Forum Members
Posts: 32,
Visits: 99
|
Hanaldo (18/01/2015)
Yeh unfortunately because you applied a wax over the top, you will need to completely clean the mould off before reapplying the chemical release agent. It isn't really necessary though, you should just be able to polish those marks out of your parts without much effort. Depends on whether you need to pull 1 or 2 parts from them or 50 I guess. Also no, you won't see much once it has evaporated. But as you wipe the film on, it should just stay as a lightly wet surface. If it beads up or fisheyes or forms anything that looks like droplets, then it is much too heavy. Anyone's guess as to why your part stuck. Wax is a bit inconsistent for me, I would never rely on it. Works great for alleviating surface tension issues, but that's all I ever use it for. You know there is no silicone in your polish, but do you know if it contains wax? There can be a difference between simple buffing compounds and polishes that claim an extra gloss. Buffing compounds are almost more like a super fine sand paper that just remove very small scratches, and often these are all polishes are. But some manufacturers include a carnauba wax or similar to yield a higher, albeit false, gloss. This then gets removed when you use a solvent cleaner and you end up with your dull looking part. Today I made the new mould of the rvs tray I anly used the easy lease release agent after I cleaned the part with easy lease cleaner . I now did 2 layers of vinylester gelcoat and this looked much better . The mould did come off pretty hard though but this can maybee bee because the vinylester doesn't got any shrink on it and the "tray" had straight edges . I also got me new polishing product from 3M it has no wax or silicone in it . I polished a new part with it and when I clean it with the easy lease cleaner the part doesn't get the weird pattern on it , it only turns a little less polished . On the old part I really think I need to sand it down with a 600 sanding paper first because when I sand it with a 1500 paper the weird pattern goes away but when I use easy lease cleaner it stil returns but not that hard
|
|
|
|
|
kip
|
|
|
Group: Forum Members
Posts: 32,
Visits: 99
|
I maybee found the problem with the vinylester gelcoat not releasing correct .
Can it be because it is spray gelcoat and I put it on with a brush ?
|
|
|
|
|
kip
|
|
|
Group: Forum Members
Posts: 32,
Visits: 99
|
I maybee found the problem with the vinylester gelcoat not releasing correct .
Can it be because it is spray gelcoat and I put it on with a brush ?
|
|
|
|