Epoxy encapsultation for the busy working mum.

[rdrr]

I've had the same experiences with the stuff. Some stayed very flexible and other times it hardens and stays tacky feeling. This was often from the same mixed batch. Something's not right, and it's not worth the trouble to figure out what it is.

The MG Chemicals epoxy works flawlessly every time. It dries hard and is never tacky. It's nylon filled so it doesn't shrink. It's not cheap though.

I think your right, especially seeing how I contacted AE to get the weight by volume measurements of the 300/11 epoxy and hardener and they couldn't tell me what it was. The person that I talked to said that the hardener was about 60gr lighter then the resin (by what she thought was per pint) but could not tell me the weight of either by pint because they get it in 45gal barrels and repackage it. Also , John the guy that used to own AE has since sold the business as well. I have enough of it left that I dont want to just throw it away so instead of potting the pickups in it I'll probably make some molds for flanges and see how that goes.

[David King]

So John Greer is out of the business? That's too bad. Somewhere he said he was buying directly from a major petrochemical company and if we know who then we could get answers. Meanwhile a volumetric dispensing system should be good enough for potting. Mixing for a minimum of 2 minutes should get you a consistent mix, if there's still a problem then try to fine-tune the proportions. If that's not working for you then I suspect that the hardener is old and decrepit.

[RedHouse]

So John Greer is out of the business? That's too bad. Somewhere he said he was buying directly from a major petrochemical company and if we know who then we could get answers. Meanwhile a volumetric dispensing system should be good enough for potting. Mixing for a minimum of 2 minutes should get you a consistent mix, if there's still a problem then try to fine-tune the proportions. If that's not working for you then I suspect that the hardener is old and decrepit.

And Ice Road Pickup Maker poster-3 weigh's in...

[David Schwab]

So John Greer is out of the business? That's too bad. Somewhere he said he was buying directly from a major petrochemical company and if we know who then we could get answers. Meanwhile a volumetric dispensing system should be good enough for potting. Mixing for a minimum of 2 minutes should get you a consistent mix, if there's still a problem then try to fine-tune the proportions. If that's not working for you then I suspect that the hardener is old and decrepit.

Who said he was out of the business? The first time I had the curing problem I actually called him on his cell phone number that he lists and he gave me the advice about how to mix that I posted. He was helpful enough. It just didn't totally solve the issue.

I bought epoxy from him three times, and each batch had some issues, but there seemed to be no rhyme or reason why. The last two batches had the most problems.

But he clearly repackages the epoxy. I don't know ho he buys it from or if the resin and hardener even come from the same company. Maybe his other products are better, but I don't care for the encapsulating epoxy.

[rdrr]

Who said he was out of the business?

Holly at AE told me that he has sold the business and retired. Don't know when it happened but think it was pretty recent.

[David Schwab]

Holly at AE told me that he has sold the business and retired. Don't know when it happened but think it was pretty recent.

Well that must have been VERY recently! It wasn't that long ago that I spoke to him.

I see John is not mentioned any more and jgreer.com now resolves to aeromarineproducts.com.

[Peter Naglitsch]

Poly Urethane Baby

I'm just too proud of my first tests with casting pickups to NOT share. OK, the EMG style/sized blocks of plastic is just that, blocks of plastic (OK Poly Urethane) to test the pigment ratio needed, but I have already made two of my LowRider bass pickups in a that mold. The other sample is a set of HBs for a custom guitar I'm about to finish. Fits perfectly into a more or less standard HB rout and thus the customer can, if he get the urge for some other pickups, add a pickup ring and use more ordinary pickups.

I used Poly as stated. Re: the heat issue, they get slightly warm, but never over 30 deg Celsius/85 deg Fahrenheit

[peskywinnets]

Absolutely fantastic - well done.

[David King]

I look at those and think "Now he's going to have to fill all that grain"...

[RedHouse]

I'm just too proud of my first tests with casting pickups to NOT share. OK, the EMG style/sized blocks of plastic is just that, blocks of plastic (OK Poly Urethane) to test the pigment ratio needed, but I have already made two of my LowRider bass pickups in a that mold. The other sample is a set of HBs for a custom guitar I'm about to finish. Fits perfectly into a more or less standard HB rout and thus the customer can, if he get the urge for some other pickups, add a pickup ring and use more ordinary pickups.

I used Poly as stated. Re: the heat issue, they get slightly warm, but never over 30 deg Celsius/85 deg Fahrenheit

Looks very cool, good work.

[David Schwab]

I used Poly as stated. Re: the heat issue, they get slightly warm, but never over 30 deg Celsius/85 deg Fahrenheit

Nice work. That's urethane resin, not poly-urethane. I had used some from AeroMarine, and it got so hot it melted the plastic cup I mixed it in!

[Peter Naglitsch]

Thanks guys. I think the pictures hides a few flaws. I might need to make a new master for the HB and make new molds if I'm going to make similar pickups again, but for a first off (OK second try) they are definitely nice enough

I look at those and think "Now he's going to have to fill all that grain"...

That's urethane resin, not poly-urethane.

Not to argue but the bottle say Polyurethan Geisshartz (resin part) and Geisshärter (hardener) from German maker Artidee (I think I spotted some other brand on the bottles too...).

[David Schwab]

Not to argue but the bottle say Polyurethan Geisshartz (resin part) and Geisshärter (hardener) from German maker Artidee (I think I spotted some other brand on the bottles too...).

Actually you are correct, it's polyurethane resin. My buddy, who's a model maker, calls it urethane resin.

I also look at those and think they need the grain filled. But then I'm not a fan of ash for that reason.

[Peter Naglitsch]

I also look at those and think they need the grain filled. But then I'm not a fan of ash for that reason.

Both sets are going into ash bodied guitars (OK, one bass) with a walnut stain/glossy Tru-Oil finish for the guitar and just a light natural tung oil finish for the bass and no grain filler so they really complement the look of the instruments.