The cycle time for this type of process will depend on several factors. If you are using a gelcoat it must be allowed to cure before loading the fibre and injecting the resin. This can be accelerated by heating the mould (the mould in the video isn't heated but many of the moulds that we manufacture are - often with embedded water pipe-work) or simply with radiant heat. The reactivity of the resin is also an important factor. Cycle times can vary from a few minutes (especially when not using gelcoat) to several hours (if using a less reactive resin) The cycle time of the process shown in the video was approximately 1.5 hours.
I am told this process gets about 6 cycles per day in an 8 hour shift. I dont understand how that is done regarding the surface-finish of both the A and B sides of the product. Normally you need wait 2-4 hours for gelcoat to cure to touch. How is this overcome? For example at 2:06 can see you applying the gelcoat by brush. Then how long did you have to wait before adding the core material?
The red string represented the resin perimiter flow channel? Where can you get that blue vacuum seal? Those little green circels coming out are your maximum depth stop? We didnt see you put vacuum on the perimiter?
Koen Klijnsmit All the seals and 'formers' used in the mould making stages are available from Composite Integration Ltd.Vacuum is connected to the perimeter flange as well as to the main mould cavity.
We use a spray primer paint to give the final finish to the sheet wax. We then use sprayed PVA as a release agent. The fine details of these techniques are included in our training courses :-) !
Compositeinteg1 Can I buy training course from you online and/or get consulting hours to finish my mould? I have finished the female but have too many uncertainties to continue without experienced guidence. I have the female mould in 3D and as mentioned have produced the female mould already. I am with too many questions about proceeding to finish the counter-mould and injection-ports and machines. Your information is very useful and I would appreciate some consulting work via email and videos if you are interested in helping. My female mould was built for RTM and under instruction from a US company but I soon realised RTM was totally unnecessary and actually inferior, with the resin injection being in the middle instead of at the perimeter. My original desire was to build LRTM mould but the consultant insisted my sized and dimensioned product would not work for LRTM. I have since been told this not true, so I fired that consultant and now will continue with the LRTM plan. Because it was designed for old RTM the mould needed to have an extra minimum 1inch length along all perimeter edges to account for the resin-poor infusion at the perimeter which was typical of RTM production moulds. Needless to say this just means I will have to always trim the product in post-production but I imagine all products need that done in some sort of way after pulling from the mould of LRTM? please let me know if can assist in some consulting send email to MonteSuaKombiATgmailDOTcom
This is the best video about the manufacture of a mold for composite molding.
Thank you.
Thanks for the positive feed-back. This is a very shortened version of the material that we use during our VRTM Mould-Building training course.
Yes, I agree that this is a great comprehensive video. I definitely rewinded it multiple times.
The cycle time for this type of process will depend on several factors. If you are using a gelcoat it must be allowed to cure before loading the fibre and injecting the resin. This can be accelerated by heating the mould (the mould in the video isn't heated but many of the moulds that we manufacture are - often with embedded water pipe-work) or simply with radiant heat.
The reactivity of the resin is also an important factor. Cycle times can vary from a few minutes (especially when not using gelcoat) to several hours (if using a less reactive resin) The cycle time of the process shown in the video was approximately 1.5 hours.
Kosmos Erdem Hi, Yes, we would be happy to help. I'll contact you to discuss.
Can you mention the list of products used throughout the process and where can I buy them at your website? Gelcoat, resins, fibers, core, seals etc.?
I am told this process gets about 6 cycles per day in an 8 hour shift. I dont understand how that is done regarding the surface-finish of both the A and B sides of the product. Normally you need wait 2-4 hours for gelcoat to cure to touch. How is this overcome? For example at 2:06 can see you applying the gelcoat by brush. Then how long did you have to wait before adding the core material?
The red string represented the resin perimiter flow channel? Where can you get that blue vacuum seal? Those little green circels coming out are your maximum depth stop? We didnt see you put vacuum on the perimiter?
Koen Klijnsmit All the seals and 'formers' used in the mould making stages are available from Composite Integration Ltd.Vacuum is connected to the perimeter flange as well as to the main mould cavity.
Compositeinteg1 Thank you, i can`t find the seperate products on the site...
great video !
i would like to know what do you spray on the wax ? it look like a blue primer on spraycan ?
i do many wax and was only spraying pva .
We use a spray primer paint to give the final finish to the sheet wax. We then use sprayed PVA as a release agent. The fine details of these techniques are included in our training courses :-) !
Compositeinteg1
Can I buy training course from you online and/or get consulting hours to finish my mould? I have finished the female but have too many uncertainties to continue without experienced guidence.
I have the female mould in 3D and as mentioned have produced the female mould already. I am with too many questions about proceeding to finish the counter-mould and injection-ports and machines. Your information is very useful and I would appreciate some consulting work via email and videos if you are interested in helping.
My female mould was built for RTM and under instruction from a US company but I soon realised RTM was totally unnecessary and actually inferior, with the resin injection being in the middle instead of at the perimeter. My original desire was to build LRTM mould but the consultant insisted my sized and dimensioned product would not work for LRTM. I have since been told this not true, so I fired that consultant and now will continue with the LRTM plan. Because it was designed for old RTM the mould needed to have an extra minimum 1inch length along all perimeter edges to account for the resin-poor infusion at the perimeter which was typical of RTM production moulds. Needless to say this just means I will have to always trim the product in post-production but I imagine all products need that done in some sort of way after pulling from the mould of LRTM?
please let me know if can assist in some consulting send email to MonteSuaKombiATgmailDOTcom