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I have found the adverts on this site getting more and more intrusive. It's doubtful that the owner of the site will get rid of something that earns money, and I can't live with them. From now on I won't use the site. Lee

I have sent a request to East Coast Fibreglass Supplies asking for advice. In the meantime I am trying to get my head around designing the patterns/moulds required to produce a foam part. Whem making a flywheel pattern for example, I print the two halves of the pattern, then sand and fill for a...

Very useful information Mr. Troll. Did you carve the styrofoam to shape? It's a pity styrofoam can't be poured like PU. Lee

I watched a video about pouring PU foam into a single sided mould. They did two pours, one "open" with nothing to stop the excess foam spilling out, and one "closed", a sheet of plastic with a few holes in was placed on top of the mould to let the excess foam escape, but keep the foam under a...

I was thinking of something like PU foam, and now I've read a bit about it, I don't think it will burn out without producing toxic gasses.

I have seen other craft sites where a two part expanding foam liquid is mixed and then poured. The foam expand quickly and fills the mould it was poured into. would this foam be suitable for producing a foam pattern for lost foam metal casting? I have a feeling it's the wrong sort of foam and is...

I think Facebook isn't for me. Thanks to all who replied. Lee

I have not wanted to join Facebook because of all the negatives I have read about. What I don't get to hear are the positives. I have a lot of musical instruments to sell, as well as music scores. Facebook seems to be the ideal marketplace. Thoughts and experiences please. Lee

One day, maybe, I will make something like that! Nice!

Looking and sounding great! Do you have more pics? Lee

Hi Miguel, Welcome. Your English is as good as mine, and I am English. Well, half English and half Welsh. It would be interesting to know what software you are using. There are many discussions on here about the software to use for 3D models. Lee

Hi Liam, Welcome to the forum. Many here will tell you, we like to see pictures! Lee

It seems I have posted my comment out of place. Could some kind soul point me to the thread where we are discussing sub headings?

I have just had a look at some of the main catagories on the front page. None of them had any sub headings. Am I missing something? I would like to see sub headings for the casting section, and wonder if others feel the same about the catagory they visit.

I am 70 and have had arthritis since age 21-ish. The only thing that helped ease the pain, and got me walking, was pure lavender oil. Dilute a few drops into a carrier oil, bath oil is ok, way oil?, probably not, and rub it on the affected joints. I also ran a very hot bath with just 4 or 5...

I would like to know more about the construction and materials used for your core moulds hardened in the microwave. Have you made a video?

100model. I am fairly certain that by the time I had the failures I was using 5% ss with fine dry sand, hardened with a 5 second burst of CO2. The cores were about the size of half a golf ball, if that. It was also after the failures that I ran out of CO2. This is why I believe that there was...

Thanks olyn, but my resin prints are very prone to warping and distortion. I wouldn't use them for something as important as a mould. It might be the resin (water washable) or it could be me. Maybe I cure them for too long (5 mins for a print half the size of a computer mouse) or for not long...

I was having a lot of problems the last time I tried casting a part. There seemed to be an air pocket of some sort bursting the mould. I couldn't figure it out and haven't cast anything since then. I was sure it was the sodium silicate/sand core. My CO2 gas ran out soon after the failures, and I...

Good suggestion. Next time I print something I will leave it attached to the build plate for a day.