[PSUBS-MAILIST] SeaQuestor progress

Tue May 7 18:01:48 EDT 2019

 Rick I glue styrofoam blocks to concrete with plain old mono foam.  It is very strong.Hank
    On Tuesday, May 7, 2019, 3:43:28 PM MDT, Rick Patton via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  

 Can someone recommend a good adhesive for joining Styrofoam together?? I went to Home Depot and they recommended a product called Gripper made by PPG. When I got home and read the instructions, it didn't say how to use it, just how bad it was if you breath it! Dave, what have you been using? Also, is there a specific date of the year for the convention and anyone know were it will be? Gonna try and make this one.Rick
On Mon, May 6, 2019 at 7:08 AM Rick Patton <satwelder at gmail.com> wrote:

Thanks David, quite a set up! glad it worked well for ya. I'll check it out.Rick
On Sun, May 5, 2019 at 8:49 PM David Colombo via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

Hi Rick, here are photos of the hot wire rig I built. Parts are 300w computer power supply, use 5v output wire. Two j boxes, one std outlet to be wired as 5v. Second j box has variable control. Two std two wire extension cords, i used 12ft., 1 inch pvc pipe, sweeps, and caps. 4 eyebolts with nylock and std nuts. Nicrome wire. I built my large bow to be able to cut 36"  x 12" deep foam blocks, the two hand held wands i use 24" wire. The hand held rig runs hotter and cuts faster. The large rig cuts 48" in about 4 min.  I did not put a bow tightner and so it cuts with slight arc as it cuts, nothing that has caused any issues with straightness. For straight edges i used two drywall squares which are 48" long, and with a couple of 3" screws they are held to the foam,  and i draw the hotwire against them. It works pretty slick. All of the foam pieces i have cut have been done with these two rigs. Total cost, less than $30. Built in about an hour. Have fun.David
On Sun, May 5, 2019, 12:19 PM Rick Patton via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

Thanks David.Rick
On Sat, May 4, 2019 at 6:14 PM David Colombo via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

Hi Rick, I'll send pictures and notes tomorrow on my rig.David
On Sat, May 4, 2019, 8:25 PM Rick Patton via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

Looking good Dave! I have yet to form my styrofoam block but it's my next hurdle. I think you explained how you made your hot wire but I can't find the thread. Would love to know how you did it or let me know what date you sent it and I'll try and find it in the archives. I have a welding machine but it may be too much oomph even on it's lowest setting to cut without setting the styrofoam on fire.Rick 
On Fri, May 3, 2019 at 11:09 PM hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

 Dave, pretty clever using tin foil. Hank
    On Friday, May 3, 2019, 9:02:41 PM MDT, David Colombo via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  

 Hi Guys, working on the first inner mold form for the ballast tank today. Sliced the foam to 1/4" sheets, and trapazoid shapes to sit over each of the tribs. Then tapped it into place and then spray glued and tinfoil applied to protect the foam. Tomorrow a couple of coats of wax and then the first layer of matt glass. The inner shell will be attached to the exoskeleton to create the ballast tanks. Plan is 4 total, two aft and two adjacent to the rear pilot.  Now that i got the form work dialed in, three more to go.
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