Wa. rules dictate 3' sqft. of riffled area outside the work windows and 10' sqft. within the work window (work window = Dredging allowed)

I have settled on this basic design drop riffle design with 2.5sqft of 1/2" riffles area  below a 4' of slick plate. 

While building this template negative I decided to make it into 2 pieces for easy transport. Simple as adding a flange to the riffle side to connect the 2 halves.

I am going to add a screen (12" x 10") and upper deck over the riffle area using more fiberglass 42" x 10". The screen is going to be a 1/8-1/4" wire freezer rack /1/2" to 3/4" spacing. A wire screen. 

The spacing between the riffle deck and discard plate above it is not set yet. Mainly because I'm not sure how far it should be apart.  An ideas here would be nice.

I'm in the tedious process of applying wax as the release agent for the fiberglass. Since this will be my first attempt at a mold like this I will be doing a test run to make sure it releases correctly. 

Once this section is completed I plan to add more riffles to the slick plate and make one long riffle area for in season work windows. All in due time, I'm slow and completing project with life moving around me. 

Gold Sluice Box Information

OK here is the important information to think about with regards to constructing your very owngold sluice boxfor your gold dredge. Perhaps you would like to improve your outdated gold sluice box also called a crash box sluice. Your gold sluice box on the dredge is unquestionably a crucial part in the building, I have done up a different web page about it so that you could see all of the setup and just how I actually made my very own. In the end, if your gold sluice box isn’t going to capture your gold, just what is the reason for a gold dredge? Should you be serious about a manual fed stream gold sluice box, glimpse at the following item on the following listing.

Old Dredge Gold Sluice Box

I’ve got a Four inch gold dredge which has been useful for several years on a variety of destinations while in the California mother lode gold rush region. Not too long ago I replaced the older dredge water pump designed for one having increased volume – the master plan was to obtain better suction power. This worked well, however i recognized a substantial decrease at my fine gold retrieval. I understand the fact that older crash box design and style gold dredge sluices are terrible in retrieving fine gold, but if you up the waters velocity an excessive amount, well, it truly can make issues a whole lot worse. I actually recognized I had created an issue, nonetheless when gold dredging throughout 2009, I observed a little gold nugget had worked the way all the way down the gold sluice box towards the Sixth riffle – it absolutely was heading it’s way out of the end of the sluice box. I later on weighed the gold nugget and this entered in at Eight grains, therefore i thought if perhaps gold this size could possibly work their way through, the fines or flake retrieval really was terrible so i was required to do some thing. I simply couldn’t procrastinate any further, so i started to take into consideration my possibilities. Primarily due to the price, I made the decision in making my very own homemade gold sluice box. I was without any kind of layout plans or even particular instructions, however I’m a mining industrial engineer through qualifications, and also I own as well as have the needed steel manufacturing tools, therefore, the job didn’t seem to be past my reach. Furthermore, the actual 49ers fashioned and created their own personal gold sluice boxes, so just why wouldn’t I produce my very own? Also i calculated I would reduce my cost in doing the work [...] Reed More