Sunday, December 19, 2021

Wooden dummy 3

The milkhouse at the barn is my cramped workspace. I'm unsure how the weight is going to suspend from the center support. If this support is insufficient I'll either make a box support the dummy fits similar to this base or make cross supports similar to more traditional models. 


The body and arms are their own tweaking challenge, the arms I'm repressing and modifying from my first dummy, the length of the arm base(as it fits in the body) has to stick out the other side of the wooden body by about 1/4 the length that fits in the body for the set pins to hold the arms in. When I was just practicing blocks on the arms the action was fine, if a bit loose from my inexperience, but lapsau or other trapping/ deflection/misdirection moves would shift the arms from their place. 

The action on the top arm moves in about a 1in or so extra inward because on the opposite inside corner I took about 1/4 inch more then I wanted it; but including the pins in the back should sure up some of the action.


Friday, December 10, 2021

Embossing/book/HDPE press

With a little imagination you can imagine this as a large press. 

The 2ton press will be switched out for a proper bottle jack. Similar to the Maker Brothers modification I've added extra length so I can fit various projects or future modifications.


Wednesday, December 8, 2021

wing chun dummy 2



To continue my Kung fu training I'm building a second training dummy for the school, one much lighter than the first. In the back of this photo you can see the body of the dummy. The frame you can see lying on it's back, the bottom support will have triangular braces to the suspension post. 
The body of the dummy will have small tire act as a housing on the base and chain to suspend from the post that will mount to the base. Tentative design is to make a three or four part collapsible construct. 


The body will have 2 tire halfs on the opposite side of the dummy to both provide spring to the body when using the first wooden arm side; and when inverted provide a rubber spring striking surface. Other projects take priority as I'm on a time crunch to get more tooling made up to prep the barn and forge for winter. Keeping small projects updated here for posterity and to keep my phone memory.

Speaking of:
The first post I made on the construction of my first dummy was deleted, idk when, those photos are gone I'll rewrite some of that when I can if it becomes relevant. Otherwise I'll just take some more photos later

knifemaking tooling

The knifesmithing project has reached the point of needing new tools. Earlier I've recorded the progress with upgrading the forge, I have weldable heat now and am one step closer to that holy grail of making Damascus.

The next important upgrade is power, hammering and forming power that is; I'm one person with limited calories to burn per hour, as much as I can hammer a shape into the other shape I want, the more the steel the harder that is and the more fuel it burns. So my design goals are to build a hammer and press with a non-existant budget. So far I have most of what I need for this upcycled design.

There are some tricky design issues I'm excited to tackle. For resource and reference I'm using; '507 Mechanical Movements Mechanisms and Devices' by Henry T. Brown.

In no specific order these are some of the Mechanisms I hope to include in a drop hammer. The main goal of this project is to make a wooden frame vertical reciprocating drop, to have a treadle powered flywheel powering the lift and drop. 
Fig 154 is a drop hammer off a drum

Here is another iteration on the simple drop hammer, closer to our design
Fig 353 is a variation on the Da Vinci cam hammer
Figure 420 is a hammer swing stop, 

Fig 416 is a continual motion treadle assistant, the spring helps the right angle turning assisting the momentum of the treadle moving the drum.

Figure 261 is a play on a weight drop pully system where the upstroke is slower than the downstroke