[PSUBS-MAILIST] SeaQuestor progress

[hank pronk via Personal_Submersibles]

 David Ingenious!Hank
    On Sunday, February 24, 2019, 2:43:31 PM MST, David Colombo via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
 Hi Tim, the rig i have is built from a 300w computer power supply salvaged from an old computer.  Attatched to it is a dc dimmer, and a duplex outlet at 12v.My cutting rigs consist of a  bow made from 1" pvc with sweeps vs short 90 coupler. I ran an extension chord thru the bow to each end with an internal knot at the exit point. On each end is a eyebolt with an internal nut, washer, wire, washer,  and nylock nut. The nicrome wire is pulled taught, and wrapped thru the eye bolt. The bow dimensions is 12 x 40. The power supply provides enough power for the nicrome. It cuts at about 12" per minute. This rate gives a pretty smooth finish. The second rig is a pair of pvc pipes about 16" long.  Any shorter without the dimmer, is two hot and cuts to fast. Your arms are the tension, but lots of flexibility.David
On Feb 23, 2019 9:45 PM, "T Novak via Personal_Submersibles" <personal_submersibles at psubs.org> wrote:


Hey David,

Please show us a photo of your hot wire foam cutting rig.  It would be interesting to see how you made and control it.

Tim

 

From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org] On Behalf Of David Colombo via Personal_Submersibles
Sent: Monday, February 18, 2019 10:12 PM
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
Subject: [PSUBS-MAILIST] SeaQuestor progress

 

Hi guys, I completed the hull rib stations on my keel form. Built my first hot wire rig and cut the first piece of foam. The hot wire rig built from a recylcled transformer from an old computer and pvc pipe. It works pretty well, but discovered that i need to make a few modificatations to wire connection points, but im happy with how well it works for my first attempt. Placed the first piece of foam i sliced from the 8 ft block, and then cut the shape of the ribs. I'll be taking videos as i go along.

Best Regards,

David
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